64063872 has 160 divisors (see below), whose sum is σ = 196978320. Its totient is φ = 20653056.

The previous prime is 64063861. The next prime is 64063873. The reversal of 64063872 is 27836046.

64063872 is a `hidden beast` number, since 640 + 6 + 3 + 8 + 7 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64063873) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 383533 + ... + 383699.

Almost surely, 2^64063872 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 64063872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98489160).

64063872 is an abundant number, since it is smaller than the sum of its proper divisors (132914448).

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

64063872 is a wasteful number, since it uses less digits than its factorization.

64063872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 64063872 is about 8003.9910044927. The cubic root of 64063872 is about 400.1330224243.

The spelling of 64063872 in words is "sixty-four million, sixty-three thousand, eight hundred seventy-two".