83660660 has 24 divisors (see below), whose sum is σ = 183326976. Its totient is φ = 32009120.

The previous prime is 83660627. The next prime is 83660693. The reversal of 83660660 is 6606638.

It is an interprime number because it is at equal distance from previous prime (83660627) and next prime (83660693).

It is a self number, because there is not a number n which added to its sum of digits gives 83660660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90476 + ... + 91395.

It is an arithmetic number, because the mean of its divisors is an integer number (7638624).

Almost surely, 2^83660660 is an apocalyptic number.

It is an amenable number.

83660660 is an abundant number, since it is smaller than the sum of its proper divisors (99666316).

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

83660660 is a wasteful number, since it uses less digits than its factorization.

83660660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181903 (or 181901 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 83660660 is about 9146.6201407952. The cubic root of 83660660 is about 437.3613775786.

The spelling of 83660660 in words is "eighty-three million, six hundred sixty thousand, six hundred sixty".