56106660 has 96 divisors (see below), whose sum is σ = 165876480. Its totient is φ = 14141952.

The previous prime is 56106649. The next prime is 56106667. The reversal of 56106660 is 6660165.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (56106667) 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, 150234 + ... + 150606.

It is an arithmetic number, because the mean of its divisors is an integer number (1727880).

Almost surely, 2^56106660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56106660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82938240).

56106660 is an abundant number, since it is smaller than the sum of its proper divisors (109769820).

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

56106660 is a wasteful number, since it uses less digits than its factorization.

56106660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 56106660 is about 7490.4379044219. The cubic root of 56106660 is about 382.8289792212.

The spelling of 56106660 in words is "fifty-six million, one hundred six thousand, six hundred sixty".