56406986 has 8 divisors (see below), whose sum is σ = 89587620. Its totient is φ = 26544448.

The previous prime is 56406967. The next prime is 56406989. The reversal of 56406986 is 68960465.

It can be written as a sum of positive squares in 2 ways, for example, as 53567761 + 2839225 = 7319^2 + 1685^2 .

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

It is not an unprimeable number, because it can be changed into a prime (56406989) 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, 829481 + ... + 829548.

Almost surely, 2^56406986 is an apocalyptic number.

56406986 is a deficient number, since it is larger than the sum of its proper divisors (33180634).

56406986 is a wasteful number, since it uses less digits than its factorization.

56406986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659048.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 56406986 is about 7510.4584414002. The cubic root of 56406986 is about 383.5108291221.

The spelling of 56406986 in words is "fifty-six million, four hundred six thousand, nine hundred eighty-six".