64568718 has 32 divisors (see below), whose sum is σ = 144115200. Its totient is φ = 21428568.

The previous prime is 64568689. The next prime is 64568723. The reversal of 64568718 is 81786546.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10405 + ... + 15407.

It is an arithmetic number, because the mean of its divisors is an integer number (4503600).

Almost surely, 2^64568718 is an apocalyptic number.

64568718 is an abundant number, since it is smaller than the sum of its proper divisors (79546482).

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

64568718 is a wasteful number, since it uses less digits than its factorization.

64568718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5253 (or 5247 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 64568718 is about 8035.4662590294. The cubic root of 64568718 is about 401.1813368402.

The spelling of 64568718 in words is "sixty-four million, five hundred sixty-eight thousand, seven hundred eighteen".