130776656 has 20 divisors (see below), whose sum is σ = 253585332. Its totient is φ = 65335296.

The previous prime is 130776649. The next prime is 130776671. The reversal of 130776656 is 656677031.

It can be written as a sum of positive squares in 2 ways, for example, as 20106256 + 110670400 = 4484^2 + 10520^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23696 + ... + 28688.

Almost surely, 2^130776656 is an apocalyptic number.

130776656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

130776656 is a deficient number, since it is larger than the sum of its proper divisors (122808676).

130776656 is a wasteful number, since it uses less digits than its factorization.

130776656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6638 (or 6632 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 130776656 is about 11435.7621521261. The cubic root of 130776656 is about 507.5865153775.

The spelling of 130776656 in words is "one hundred thirty million, seven hundred seventy-six thousand, six hundred fifty-six".