56705709 has 8 divisors (see below), whose sum is σ = 79587040. Its totient is φ = 35814096.

The previous prime is 56705689. The next prime is 56705717. The reversal of 56705709 is 90750765.

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

It is not a de Polignac number, because 56705709 - 2⁹ = 56705197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56705729) 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, 497362 + ... + 497475.

It is an arithmetic number, because the mean of its divisors is an integer number (9948380).

Almost surely, 2^56705709 is an apocalyptic number.

It is an amenable number.

56705709 is a deficient number, since it is larger than the sum of its proper divisors (22881331).

56705709 is a wasteful number, since it uses less digits than its factorization.

56705709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994859.

The product of its (nonzero) digits is 66150, while the sum is 39.

The square root of 56705709 is about 7530.3193159387. The cubic root of 56705709 is about 384.1866429373.

The spelling of 56705709 in words is "fifty-six million, seven hundred five thousand, seven hundred nine".