56398686 has 8 divisors (see below), whose sum is σ = 112797384. Its totient is φ = 18799560.

The previous prime is 56398681. The next prime is 56398723. The reversal of 56398686 is 68689365.

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

56398686 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56398681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4699885 + ... + 4699896.

It is an arithmetic number, because the mean of its divisors is an integer number (14099673).

Almost surely, 2^56398686 is an apocalyptic number.

56398686 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

56398686 is a wasteful number, since it uses less digits than its factorization.

56398686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9399786.

The product of its digits is 1866240, while the sum is 51.

The square root of 56398686 is about 7509.9058582648. The cubic root of 56398686 is about 383.4920176460.

The spelling of 56398686 in words is "fifty-six million, three hundred ninety-eight thousand, six hundred eighty-six".