56666508 has 48 divisors (see below), whose sum is σ = 140726880. Its totient is φ = 17685504.

The previous prime is 56666501. The next prime is 56666509. The reversal of 56666508 is 80566665.

It is a super-2 number, since 2×56666508² = 6422186257828128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56666508.

It is not an unprimeable number, because it can be changed into a prime (56666501) 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 15 ways as a sum of consecutive naturals, for example, 46110 + ... + 47322.

It is an arithmetic number, because the mean of its divisors is an integer number (2931810).

Almost surely, 2^56666508 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 56666508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70363440).

56666508 is an abundant number, since it is smaller than the sum of its proper divisors (84060372).

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

56666508 is a wasteful number, since it uses less digits than its factorization.

56666508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 56666508 is about 7527.7159882663. The cubic root of 56666508 is about 384.0980923448.

The spelling of 56666508 in words is "fifty-six million, six hundred sixty-six thousand, five hundred eight".