656162644 has 12 divisors (see below), whose sum is σ = 1208720800. Its totient is φ = 310813848.

The previous prime is 656162641. The next prime is 656162657. The reversal of 656162644 is 446261656.

It is a junction number, because it is equal to n+sod(n) for n = 656162597 and 656162606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656162641) 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, 4316784 + ... + 4316935.

Almost surely, 2^656162644 is an apocalyptic number.

It is an amenable number.

656162644 is a deficient number, since it is larger than the sum of its proper divisors (552558156).

656162644 is a wasteful number, since it uses less digits than its factorization.

656162644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8633742 (or 8633740 counting only the distinct ones).

The product of its digits is 207360, while the sum is 40.

The square root of 656162644 is about 25615.6718436195. The cubic root of 656162644 is about 868.9681005539.

The spelling of 656162644 in words is "six hundred fifty-six million, one hundred sixty-two thousand, six hundred forty-four".