64755568 has 20 divisors (see below), whose sum is σ = 127592280. Its totient is φ = 31828544.

The previous prime is 64755547. The next prime is 64755569. The reversal of 64755568 is 86555746.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64755569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33355 + ... + 35242.

It is an arithmetic number, because the mean of its divisors is an integer number (6379614).

Almost surely, 2^64755568 is an apocalyptic number.

It is an amenable number.

64755568 is a deficient number, since it is larger than the sum of its proper divisors (62836712).

64755568 is a wasteful number, since it uses less digits than its factorization.

64755568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68664 (or 68658 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 46.

The square root of 64755568 is about 8047.0844409637. The cubic root of 64755568 is about 401.5679458340.

It can be divided in two parts, 6 and 4755568, that added together give a palindrome (4755574).

The spelling of 64755568 in words is "sixty-four million, seven hundred fifty-five thousand, five hundred sixty-eight".