56685730 has 8 divisors (see below), whose sum is σ = 102034332. Its totient is φ = 22674288.

The previous prime is 56685703. The next prime is 56685751. The reversal of 56685730 is 3758665.

It can be written as a sum of positive squares in 2 ways, for example, as 52577001 + 4108729 = 7251^2 + 2027^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 2834277 + ... + 2834296.

Almost surely, 2^56685730 is an apocalyptic number.

56685730 is a deficient number, since it is larger than the sum of its proper divisors (45348602).

56685730 is a wasteful number, since it uses less digits than its factorization.

56685730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5668580.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 56685730 is about 7528.9926284995. The cubic root of 56685730 is about 384.1415177539.

The spelling of 56685730 in words is "fifty-six million, six hundred eighty-five thousand, seven hundred thirty".