656376669 has 16 divisors (see below), whose sum is σ = 1047211200. Its totient is φ = 403923888.

The previous prime is 656376661. The next prime is 656376673. The reversal of 656376669 is 966673656.

It is not a de Polignac number, because 656376669 - 2³ = 656376661 is a prime.

It is a super-2 number, since 2×656376669² = 861660663215071122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656376661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 934659 + ... + 935360.

It is an arithmetic number, because the mean of its divisors is an integer number (65450700).

Almost surely, 2^656376669 is an apocalyptic number.

It is an amenable number.

656376669 is a deficient number, since it is larger than the sum of its proper divisors (390834531).

656376669 is a wasteful number, since it uses less digits than its factorization.

656376669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870041 (or 1870035 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 54.

The square root of 656376669 is about 25619.8491213356. The cubic root of 656376669 is about 869.0625693477.

The spelling of 656376669 in words is "six hundred fifty-six million, three hundred seventy-six thousand, six hundred sixty-nine".