56689490 has 64 divisors (see below), whose sum is σ = 124104960. Its totient is φ = 18359040.

The previous prime is 56689481. The next prime is 56689573. The reversal of 56689490 is 9498665.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40787 + ... + 42153.

It is an arithmetic number, because the mean of its divisors is an integer number (1939140).

Almost surely, 2^56689490 is an apocalyptic number.

56689490 is an abundant number, since it is smaller than the sum of its proper divisors (67415470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56689490 is a wasteful number, since it uses less digits than its factorization.

56689490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 56689490 is about 7529.2423257589. The cubic root of 56689490 is about 384.1500110153.

The spelling of 56689490 in words is "fifty-six million, six hundred eighty-nine thousand, four hundred ninety".