64836432 has 120 divisors (see below), whose sum is σ = 191363744. Its totient is φ = 20466432.

The previous prime is 64836427. The next prime is 64836433. The reversal of 64836432 is 23463846.

It is a happy number.

64836432 is a `hidden beast` number, since 6 + 4 + 8 + 3 + 643 + 2 = 666.

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 (64836433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228963 + ... + 229245.

Almost surely, 2^64836432 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 64836432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95681872).

64836432 is an abundant number, since it is smaller than the sum of its proper divisors (126527312).

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

64836432 is a wasteful number, since it uses less digits than its factorization.

64836432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 368 counting only the distinct ones).

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

The square root of 64836432 is about 8052.1073018186. The cubic root of 64836432 is about 401.7350299630.

The spelling of 64836432 in words is "sixty-four million, eight hundred thirty-six thousand, four hundred thirty-two".