64874664 has 96 divisors (see below), whose sum is σ = 189072000. Its totient is φ = 20030976.

The previous prime is 64874647. The next prime is 64874671. The reversal of 64874664 is 46647846.

It is a super-2 number, since 2×64874664² = 8417444058225792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63792 + ... + 64800.

It is an arithmetic number, because the mean of its divisors is an integer number (1969500).

Almost surely, 2^64874664 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 64874664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94536000).

64874664 is an abundant number, since it is smaller than the sum of its proper divisors (124197336).

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

64874664 is a wasteful number, since it uses less digits than its factorization.

64874664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087 (or 1080 counting only the distinct ones).

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

The square root of 64874664 is about 8054.4809888658. The cubic root of 64874664 is about 401.8139779415.

The spelling of 64874664 in words is "sixty-four million, eight hundred seventy-four thousand, six hundred sixty-four".