56672617 has 4 divisors (see below), whose sum is σ = 56738116. Its totient is φ = 56607120.

The previous prime is 56672591. The next prime is 56672639. The reversal of 56672617 is 71627665.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19900521 + 36772096 = 4461^2 + 6064^2 .

It is a cyclic number.

It is not a de Polignac number, because 56672617 - 2⁷ = 56672489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56672617.

It is not an unprimeable number, because it can be changed into a prime (56670617) 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 in 3 ways as a sum of consecutive naturals, for example, 31434 + ... + 33187.

It is an arithmetic number, because the mean of its divisors is an integer number (14184529).

Almost surely, 2^56672617 is an apocalyptic number.

It is an amenable number.

56672617 is a deficient number, since it is larger than the sum of its proper divisors (65499).

56672617 is an equidigital number, since it uses as much as digits as its factorization.

56672617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65498.

The product of its digits is 105840, while the sum is 40.

The square root of 56672617 is about 7528.1217444991. The cubic root of 56672617 is about 384.1118945654. Note that the first 3 decimals are identical.

The spelling of 56672617 in words is "fifty-six million, six hundred seventy-two thousand, six hundred seventeen".