64932864 has 88 divisors (see below), whose sum is σ = 180791040. Its totient is φ = 20680704.

The previous prime is 64932839. The next prime is 64932883. The reversal of 64932864 is 46823946.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70197 + ... + 71115.

Almost surely, 2^64932864 is an apocalyptic number.

64932864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64932864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90395520).

64932864 is an abundant number, since it is smaller than the sum of its proper divisors (115858176).

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

64932864 is a wasteful number, since it uses less digits than its factorization.

64932864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965 (or 947 counting only the distinct ones).

The product of its digits is 248832, while the sum is 42.

The square root of 64932864 is about 8058.0930746672. The cubic root of 64932864 is about 401.9340997393.

The spelling of 64932864 in words is "sixty-four million, nine hundred thirty-two thousand, eight hundred sixty-four".