659653983 has 8 divisors (see below), whose sum is σ = 977265200. Its totient is φ = 439769304.

The previous prime is 659653949. The next prime is 659653987. The reversal of 659653983 is 389356956.

It is not a de Polignac number, because 659653983 - 2⁹ = 659653471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659653987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12215788 + ... + 12215841.

It is an arithmetic number, because the mean of its divisors is an integer number (122158150).

Almost surely, 2^659653983 is an apocalyptic number.

659653983 is a deficient number, since it is larger than the sum of its proper divisors (317611217).

659653983 is a wasteful number, since it uses less digits than its factorization.

659653983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24431638 (or 24431632 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 54.

The square root of 659653983 is about 25683.7299277188. The cubic root of 659653983 is about 870.5065896234.

The spelling of 659653983 in words is "six hundred fifty-nine million, six hundred fifty-three thousand, nine hundred eighty-three".