56989086 has 64 divisors (see below), whose sum is σ = 142926336. Its totient is φ = 14716800.

The previous prime is 56989081. The next prime is 56989087. The reversal of 56989086 is 68098965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56989081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135156 + ... + 135576.

It is an arithmetic number, because the mean of its divisors is an integer number (2233224).

Almost surely, 2^56989086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56989086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71463168).

56989086 is an abundant number, since it is smaller than the sum of its proper divisors (85937250).

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

56989086 is a wasteful number, since it uses less digits than its factorization.

56989086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737.

The product of its (nonzero) digits is 933120, while the sum is 51.

The square root of 56989086 is about 7549.1116033610. Note that the first 3 decimals coincide. The cubic root of 56989086 is about 384.8255486701.

The spelling of 56989086 in words is "fifty-six million, nine hundred eighty-nine thousand, eighty-six".