56698638 has 32 divisors (see below), whose sum is σ = 122632704. Its totient is φ = 17407872.

The previous prime is 56698637. The next prime is 56698643. The reversal of 56698638 is 83689665.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56698633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1120 + ... + 10707.

It is an arithmetic number, because the mean of its divisors is an integer number (3832272).

Almost surely, 2^56698638 is an apocalyptic number.

56698638 is an abundant number, since it is smaller than the sum of its proper divisors (65934066).

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

56698638 is a wasteful number, since it uses less digits than its factorization.

56698638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11896.

The product of its digits is 1866240, while the sum is 51.

The square root of 56698638 is about 7529.8497992988. The cubic root of 56698638 is about 384.1706733714.

The spelling of 56698638 in words is "fifty-six million, six hundred ninety-eight thousand, six hundred thirty-eight".