66500508 has 48 divisors (see below), whose sum is σ = 158086656. Its totient is φ = 21754560.

The previous prime is 66500503. The next prime is 66500543. The reversal of 66500508 is 80500566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66500501) 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, 213673 + ... + 213983.

It is an arithmetic number, because the mean of its divisors is an integer number (3293472).

Almost surely, 2^66500508 is an apocalyptic number.

It is an amenable number.

66500508 is an abundant number, since it is smaller than the sum of its proper divisors (91586148).

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

66500508 is a wasteful number, since it uses less digits than its factorization.

66500508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 66500508 is about 8154.7843625690. The cubic root of 66500508 is about 405.1429825892.

The spelling of 66500508 in words is "sixty-six million, five hundred thousand, five hundred eight".