56640104 has 16 divisors (see below), whose sum is σ = 106284420. Its totient is φ = 28297600.

The previous prime is 56640097. The next prime is 56640109. The reversal of 56640104 is 40104665.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 55204900 + 1435204 = 7430^2 + 1198^2 .

It is a super-2 number, since 2×56640104² = 6416202762261632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56640109) 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, 13454 + ... + 17154.

Almost surely, 2^56640104 is an apocalyptic number.

It is an amenable number.

56640104 is a deficient number, since it is larger than the sum of its proper divisors (49644316).

56640104 is a wasteful number, since it uses less digits than its factorization.

56640104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5620 (or 5616 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 56640104 is about 7525.9619983096. The cubic root of 56640104 is about 384.0384256976.

Adding to 56640104 its reverse (40104665), we get a palindrome (96744769).

The spelling of 56640104 in words is "fifty-six million, six hundred forty thousand, one hundred four".