7677686556 has 36 divisors (see below), whose sum is σ = 19441526104. Its totient is φ = 2554740000.

The previous prime is 7677686537. The next prime is 7677686563. The reversal of 7677686556 is 6556867767.

7677686556 is a `hidden beast` number, since 7 + 6 + 7 + 76 + 8 + 6 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×7677686556² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7677686493 and 7677686502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166195 + ... + 207306.

Almost surely, 2^7677686556 is an apocalyptic number.

It is an amenable number.

7677686556 is an abundant number, since it is smaller than the sum of its proper divisors (11763839548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7677686556 is a wasteful number, since it uses less digits than its factorization.

7677686556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374082 (or 374077 counting only the distinct ones).

The product of its digits is 88905600, while the sum is 63.

The square root of 7677686556 is about 87622.4089830906. The cubic root of 7677686556 is about 1972.7715338913.

The spelling of 7677686556 in words is "seven billion, six hundred seventy-seven million, six hundred eighty-six thousand, five hundred fifty-six".