61568404 has 24 divisors (see below), whose sum is σ = 111132000. Its totient is φ = 29830944.

The previous prime is 61568371. The next prime is 61568443. The reversal of 61568404 is 40486516.

It is a super-2 number, since 2×61568404² = 7581336742214432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61568404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15847 + ... + 19345.

It is an arithmetic number, because the mean of its divisors is an integer number (4630500).

Almost surely, 2^61568404 is an apocalyptic number.

It is an amenable number.

61568404 is a deficient number, since it is larger than the sum of its proper divisors (49563596).

61568404 is a wasteful number, since it uses less digits than its factorization.

61568404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3639 (or 3637 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 61568404 is about 7846.5536383816. The cubic root of 61568404 is about 394.8686290683.

The spelling of 61568404 in words is "sixty-one million, five hundred sixty-eight thousand, four hundred four".