56380665 has 16 divisors (see below), whose sum is σ = 98410176. Its totient is φ = 27336000.

The previous prime is 56380663. The next prime is 56380679. The reversal of 56380665 is 56608365.

It is not a de Polignac number, because 56380665 - 2¹ = 56380663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56380663) 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, 170686 + ... + 171015.

It is an arithmetic number, because the mean of its divisors is an integer number (6150636).

Almost surely, 2^56380665 is an apocalyptic number.

56380665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56380665 is a deficient number, since it is larger than the sum of its proper divisors (42029511).

56380665 is a wasteful number, since it uses less digits than its factorization.

56380665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341720.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 56380665 is about 7508.7059470990. The cubic root of 56380665 is about 383.4511677234.

The spelling of 56380665 in words is "fifty-six million, three hundred eighty thousand, six hundred sixty-five".