56690404 has 6 divisors (see below), whose sum is σ = 99208214. Its totient is φ = 28345200.

The previous prime is 56690399. The next prime is 56690407. The reversal of 56690404 is 40409665.

It can be written as a sum of positive squares in only one way, i.e., 54730404 + 1960000 = 7398^2 + 1400^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 56690404.

It is not an unprimeable number, because it can be changed into a prime (56690407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7086297 + ... + 7086304.

Almost surely, 2^56690404 is an apocalyptic number.

It is an amenable number.

56690404 is a deficient number, since it is larger than the sum of its proper divisors (42517810).

56690404 is a wasteful number, since it uses less digits than its factorization.

56690404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14172605 (or 14172603 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 56690404 is about 7529.3030221927. The cubic root of 56690404 is about 384.1520755439.

The spelling of 56690404 in words is "fifty-six million, six hundred ninety thousand, four hundred four".