64556368 has 10 divisors (see below), whose sum is σ = 125077994. Its totient is φ = 32278176.

The previous prime is 64556363. The next prime is 64556369. The reversal of 64556368 is 86365546.

It can be written as a sum of positive squares in only one way, i.e., 64448784 + 107584 = 8028^2 + 328^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64556363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2017371 + ... + 2017402.

Almost surely, 2^64556368 is an apocalyptic number.

It is an amenable number.

64556368 is a deficient number, since it is larger than the sum of its proper divisors (60521626).

64556368 is a wasteful number, since it uses less digits than its factorization.

64556368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4034781 (or 4034775 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

The square root of 64556368 is about 8034.6977541162. The cubic root of 64556368 is about 401.1557573461.

The spelling of 64556368 in words is "sixty-four million, five hundred fifty-six thousand, three hundred sixty-eight".