56993986 has 32 divisors (see below), whose sum is σ = 102523392. Its totient is φ = 23250240.

The previous prime is 56993971. The next prime is 56993987. The reversal of 56993986 is 68939965.

It is not an unprimeable number, because it can be changed into a prime (56993987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23176 + ... + 25516.

It is an arithmetic number, because the mean of its divisors is an integer number (3203856).

Almost surely, 2^56993986 is an apocalyptic number.

56993986 is a deficient number, since it is larger than the sum of its proper divisors (45529406).

56993986 is a wasteful number, since it uses less digits than its factorization.

56993986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434.

The product of its digits is 3149280, while the sum is 55.

The square root of 56993986 is about 7549.4361378847. The cubic root of 56993986 is about 384.8365776307.

It can be divided in two parts, 569939 and 86, that added together give a square (570025 = 755²).

The spelling of 56993986 in words is "fifty-six million, nine hundred ninety-three thousand, nine hundred eighty-six".