64746864 has 280 divisors, whose sum is σ = 235283552. Its totient is φ = 16796160.

The previous prime is 64746859. The next prime is 64746883. The reversal of 64746864 is 46864746.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1061394 + ... + 1061454.

Almost surely, 2^64746864 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 64746864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117641776).

64746864 is an abundant number, since it is smaller than the sum of its proper divisors (170536688).

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

64746864 is a wasteful number, since it uses less digits than its factorization.

64746864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 86 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The square root of 64746864 is about 8046.5436057975. The cubic root of 64746864 is about 401.5499530234.

The spelling of 64746864 in words is "sixty-four million, seven hundred forty-six thousand, eight hundred sixty-four".