56628879 has 8 divisors (see below), whose sum is σ = 76198320. Its totient is φ = 37406016.

The previous prime is 56628841. The next prime is 56628881. The reversal of 56628879 is 97882665.

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

It is not a de Polignac number, because 56628879 - 2¹² = 56624783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56628809) 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, 86262 + ... + 86915.

It is an arithmetic number, because the mean of its divisors is an integer number (9524790).

Almost surely, 2^56628879 is an apocalyptic number.

56628879 is a deficient number, since it is larger than the sum of its proper divisors (19569441).

56628879 is a wasteful number, since it uses less digits than its factorization.

56628879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173289.

The product of its digits is 1451520, while the sum is 51.

The square root of 56628879 is about 7525.2162095185. The cubic root of 56628879 is about 384.0130542980.

It can be divided in two parts, 5662 and 8879, that added together give a palindrome (14541).

The spelling of 56628879 in words is "fifty-six million, six hundred twenty-eight thousand, eight hundred seventy-nine".