56682990 has 160 divisors (see below), whose sum is σ = 187830720. Its totient is φ = 11943936.

The previous prime is 56682979. The next prime is 56683013. The reversal of 56682990 is 9928665.

56682990 is a `hidden beast` number, since 566 + 82 + 9 + 9 + 0 = 666.

It is a super-2 number, since 2×56682990² = 6425922710680200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 73326 + ... + 74094.

It is an arithmetic number, because the mean of its divisors is an integer number (1173942).

Almost surely, 2^56682990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56682990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93915360).

56682990 is an abundant number, since it is smaller than the sum of its proper divisors (131147730).

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

56682990 is a wasteful number, since it uses less digits than its factorization.

56682990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 56682990 is about 7528.8106630463. The cubic root of 56682990 is about 384.1353282789.

The spelling of 56682990 in words is "fifty-six million, six hundred eighty-two thousand, nine hundred ninety".