56870729 has 8 divisors (see below), whose sum is σ = 60802560. Its totient is φ = 53004096.

The previous prime is 56870713. The next prime is 56870783. The reversal of 56870729 is 92707865.

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

It is not a de Polignac number, because 56870729 - 2⁴ = 56870713 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 56870729.

It is not an unprimeable number, because it can be changed into a prime (56870029) 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, 14489 + ... + 17990.

It is an arithmetic number, because the mean of its divisors is an integer number (7600320).

Almost surely, 2^56870729 is an apocalyptic number.

It is an amenable number.

56870729 is a deficient number, since it is larger than the sum of its proper divisors (3931831).

56870729 is a wasteful number, since it uses less digits than its factorization.

56870729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32599.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 56870729 is about 7541.2683946403. The cubic root of 56870729 is about 384.5589574789.

The spelling of 56870729 in words is "fifty-six million, eight hundred seventy thousand, seven hundred twenty-nine".