64622885 has 16 divisors (see below), whose sum is σ = 80303616. Its totient is φ = 49891968.

The previous prime is 64622881. The next prime is 64622891. The reversal of 64622885 is 58822646.

It is a cyclic number.

It is not a de Polignac number, because 64622885 - 2² = 64622881 is a prime.

It is a super-2 number, since 2×64622885² = 8352234531446450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64622881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15272 + ... + 19038.

It is an arithmetic number, because the mean of its divisors is an integer number (5018976).

Almost surely, 2^64622885 is an apocalyptic number.

It is an amenable number.

64622885 is a deficient number, since it is larger than the sum of its proper divisors (15680731).

64622885 is a wasteful number, since it uses less digits than its factorization.

64622885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3892.

The product of its digits is 184320, while the sum is 41.

The square root of 64622885 is about 8038.8360475880. The cubic root of 64622885 is about 401.2934897851.

The spelling of 64622885 in words is "sixty-four million, six hundred twenty-two thousand, eight hundred eighty-five".