56689998 has 8 divisors (see below), whose sum is σ = 113380008. Its totient is φ = 18896664.

The previous prime is 56689993. The next prime is 56689999. The reversal of 56689998 is 89998665.

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

56689998 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56689993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4724161 + ... + 4724172.

It is an arithmetic number, because the mean of its divisors is an integer number (14172501).

Almost surely, 2^56689998 is an apocalyptic number.

56689998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

56689998 is a wasteful number, since it uses less digits than its factorization.

56689998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9448338.

The product of its digits is 8398080, while the sum is 60.

The square root of 56689998 is about 7529.2760608175. The cubic root of 56689998 is about 384.1511584803.

The spelling of 56689998 in words is "fifty-six million, six hundred eighty-nine thousand, nine hundred ninety-eight".