64556653 has 16 divisors (see below), whose sum is σ = 77930496. Its totient is φ = 52279920.

The previous prime is 64556647. The next prime is 64556671. The reversal of 64556653 is 35665546.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-64556653 is a prime.

It is a super-2 number, since 2×64556653² = 8335122893124818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64556603) 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, 10948 + ... + 15778.

It is an arithmetic number, because the mean of its divisors is an integer number (4870656).

Almost surely, 2^64556653 is an apocalyptic number.

It is an amenable number.

64556653 is a deficient number, since it is larger than the sum of its proper divisors (13373843).

64556653 is a wasteful number, since it uses less digits than its factorization.

64556653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4944.

The product of its digits is 324000, while the sum is 40.

The square root of 64556653 is about 8034.7154896735. The cubic root of 64556653 is about 401.1563476789.

The spelling of 64556653 in words is "sixty-four million, five hundred fifty-six thousand, six hundred fifty-three".