64814568 has 128 divisors (see below), whose sum is σ = 203212800. Its totient is φ = 16770816.

The previous prime is 64814531. The next prime is 64814569. The reversal of 64814568 is 86541846.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (64814569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128605 + ... + 129107.

It is an arithmetic number, because the mean of its divisors is an integer number (1587600).

Almost surely, 2^64814568 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 64814568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101606400).

64814568 is an abundant number, since it is smaller than the sum of its proper divisors (138398232).

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

64814568 is a wasteful number, since it uses less digits than its factorization.

64814568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591 (or 587 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 64814568 is about 8050.7495303232. The cubic root of 64814568 is about 401.6898674829.

The spelling of 64814568 in words is "sixty-four million, eight hundred fourteen thousand, five hundred sixty-eight".