56740709 has 8 divisors (see below), whose sum is σ = 57970080. Its totient is φ = 55524496.

The previous prime is 56740699. The next prime is 56740727. The reversal of 56740709 is 90704765.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56740709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56740009) 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, 5687 + ... + 12075.

It is an arithmetic number, because the mean of its divisors is an integer number (7246260).

Almost surely, 2^56740709 is an apocalyptic number.

It is an amenable number.

56740709 is a deficient number, since it is larger than the sum of its proper divisors (1229371).

56740709 is a wasteful number, since it uses less digits than its factorization.

56740709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6579.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 56740709 is about 7532.6428960890. The cubic root of 56740709 is about 384.2656694715.

The spelling of 56740709 in words is "fifty-six million, seven hundred forty thousand, seven hundred nine".