56634665 has 8 divisors (see below), whose sum is σ = 68006088. Its totient is φ = 45278080.

The previous prime is 56634647. The next prime is 56634689. The reversal of 56634665 is 56643665.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2111209 + 54523456 = 1453^2 + 7384^2 .

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

It is not a de Polignac number, because 56634665 - 2⁶ = 56634601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8135 + ... + 13395.

It is an arithmetic number, because the mean of its divisors is an integer number (8500761).

Almost surely, 2^56634665 is an apocalyptic number.

It is an amenable number.

56634665 is a deficient number, since it is larger than the sum of its proper divisors (11371423).

56634665 is a wasteful number, since it uses less digits than its factorization.

56634665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7419.

The product of its digits is 388800, while the sum is 41.

The square root of 56634665 is about 7525.6006404805. The cubic root of 56634665 is about 384.0261325712.

It can be divided in two parts, 566346 and 65, that multiplied together give a triangular number (36812490 = T₈₅₈₀).

The spelling of 56634665 in words is "fifty-six million, six hundred thirty-four thousand, six hundred sixty-five".