64904832 has 96 divisors (see below), whose sum is σ = 188928480. Its totient is φ = 21385728.

The previous prime is 64904821. The next prime is 64904837. The reversal of 64904832 is 23840946.

It is a happy number.

64904832 is a `hidden beast` number, since 649 + 0 + 4 + 8 + 3 + 2 = 666.

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

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

It is not an unprimeable number, because it can be changed into a prime (64904837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118383 + ... + 118929.

It is an arithmetic number, because the mean of its divisors is an integer number (1968005).

Almost surely, 2^64904832 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 64904832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94464240).

64904832 is an abundant number, since it is smaller than the sum of its proper divisors (124023648).

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

64904832 is a wasteful number, since it uses less digits than its factorization.

64904832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 64904832 is about 8056.3535175661. The cubic root of 64904832 is about 401.8762521014.

The spelling of 64904832 in words is "sixty-four million, nine hundred four thousand, eight hundred thirty-two".