64935864 has 128 divisors (see below), whose sum is σ = 209548800. Its totient is φ = 18247680.

The previous prime is 64935859. The next prime is 64935881. The reversal of 64935864 is 46853946.

64935864 is a `hidden beast` number, since 64 + 9 + 3 + 586 + 4 = 666.

Its product of digits (622080) is a multiple of the sum of its prime divisors (720).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100984 + ... + 101624.

It is an arithmetic number, because the mean of its divisors is an integer number (1637100).

Almost surely, 2^64935864 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 64935864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104774400).

64935864 is an abundant number, since it is smaller than the sum of its proper divisors (144612936).

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

64935864 is a wasteful number, since it uses less digits than its factorization.

64935864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730 (or 720 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 64935864 is about 8058.2792207766. The cubic root of 64935864 is about 401.9402896389.

The spelling of 64935864 in words is "sixty-four million, nine hundred thirty-five thousand, eight hundred sixty-four".