56806866 has 16 divisors (see below), whose sum is σ = 126237600. Its totient is φ = 18935604.

The previous prime is 56806847. The next prime is 56806889. The reversal of 56806866 is 66860865.

56806866 is a `hidden beast` number, since 568 + 0 + 6 + 86 + 6 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525936 + ... + 526043.

It is an arithmetic number, because the mean of its divisors is an integer number (7889850).

Almost surely, 2^56806866 is an apocalyptic number.

56806866 is an abundant number, since it is smaller than the sum of its proper divisors (69430734).

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

56806866 is a wasteful number, since it uses less digits than its factorization.

56806866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051990 (or 1051984 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 56806866 is about 7537.0329706059. The cubic root of 56806866 is about 384.4149567029.

The spelling of 56806866 in words is "fifty-six million, eight hundred six thousand, eight hundred sixty-six".