56690 has 8 divisors (see below), whose sum is σ = 102060. Its totient is φ = 22672.

The previous prime is 56687. The next prime is 56701. The reversal of 56690 is 9665.

56690 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 2 ways, for example, as 54289 + 2401 = 233^2 + 49^2 .

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

It is a super-2 number, since 2×56690² = 6427512200, which contains 22 as substring.

It is a Curzon number.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2825 + ... + 2844.

2⁵⁶⁶⁹⁰ is an apocalyptic number.

56690 is a deficient number, since it is larger than the sum of its proper divisors (45370).

56690 is a wasteful number, since it uses less digits than its factorization.

56690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5676.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 56690 is about 238.0966190436. The cubic root of 56690 is about 38.4151162998.

It can be divided in two parts, 566 and 90, that added together give a palindrome (656).

The spelling of 56690 in words is "fifty-six thousand, six hundred ninety".