56831665 has 8 divisors (see below), whose sum is σ = 74397888. Its totient is φ = 41332080.

The previous prime is 56831651. The next prime is 56831669. The reversal of 56831665 is 56613865.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56831665 - 2⁵ = 56831633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56831669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516597 + ... + 516706.

It is an arithmetic number, because the mean of its divisors is an integer number (9299736).

Almost surely, 2^56831665 is an apocalyptic number.

56831665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56831665 is a deficient number, since it is larger than the sum of its proper divisors (17566223).

56831665 is a wasteful number, since it uses less digits than its factorization.

56831665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033319.

The product of its digits is 129600, while the sum is 40.

The square root of 56831665 is about 7538.6779344922. The cubic root of 56831665 is about 384.4708872637.

The spelling of 56831665 in words is "fifty-six million, eight hundred thirty-one thousand, six hundred sixty-five".