56708737 has 4 divisors (see below), whose sum is σ = 56731860. Its totient is φ = 56685616.

The previous prime is 56708693. The next prime is 56708741. The reversal of 56708737 is 73780765.

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 47320641 + 9388096 = 6879^2 + 3064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56708737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56708693 and 56708702.

It is not an unprimeable number, because it can be changed into a prime (56708767) 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, 7378 + ... + 12955.

It is an arithmetic number, because the mean of its divisors is an integer number (14182965).

Almost surely, 2^56708737 is an apocalyptic number.

It is an amenable number.

56708737 is a deficient number, since it is larger than the sum of its proper divisors (23123).

56708737 is a wasteful number, since it uses less digits than its factorization.

56708737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23122.

The product of its (nonzero) digits is 246960, while the sum is 43.

The square root of 56708737 is about 7530.5203671460. The cubic root of 56708737 is about 384.1934811462.

The spelling of 56708737 in words is "fifty-six million, seven hundred eight thousand, seven hundred thirty-seven".