56870731 has 8 divisors (see below), whose sum is σ = 58567824. Its totient is φ = 55188480.

The previous prime is 56870713. The next prime is 56870783. The reversal of 56870731 is 13707865.

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

It is a cyclic number.

It is not a de Polignac number, because 56870731 - 2⁵ = 56870699 is a prime.

It is a super-2 number, since 2×56870731² = 6468560088948722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56870791) 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, 4320 + ... + 11506.

It is an arithmetic number, because the mean of its divisors is an integer number (7320978).

Almost surely, 2^56870731 is an apocalyptic number.

56870731 is a deficient number, since it is larger than the sum of its proper divisors (1697093).

56870731 is a wasteful number, since it uses less digits than its factorization.

56870731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7421.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 56870731 is about 7541.2685272439. The cubic root of 56870731 is about 384.5589619869.

The spelling of 56870731 in words is "fifty-six million, eight hundred seventy thousand, seven hundred thirty-one".