64386432 has 96 divisors (see below), whose sum is σ = 202161960. Its totient is φ = 19507200.

The previous prime is 64386431. The next prime is 64386461. The reversal of 64386432 is 23468346.

It is a happy number.

64386432 is a `hidden beast` number, since 6 + 4 + 3 + 8 + 643 + 2 = 666.

64386432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×64386432² = 8291225251381248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64386431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10132 + ... + 15212.

Almost surely, 2^64386432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64386432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101080980).

64386432 is an abundant number, since it is smaller than the sum of its proper divisors (137775528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64386432 is a wasteful number, since it uses less digits than its factorization.

64386432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112 (or 5097 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 64386432 is about 8024.1156522074. The cubic root of 64386432 is about 400.8034517493.

The spelling of 64386432 in words is "sixty-four million, three hundred eighty-six thousand, four hundred thirty-two".