660659100623 has 16 divisors (see below), whose sum is σ = 676413911040. Its totient is φ = 644976323136.

The previous prime is 660659100617. The next prime is 660659100713. The reversal of 660659100623 is 326001956066.

It is a cyclic number.

It is not a de Polignac number, because 660659100623 - 2²² = 660654906319 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 (660659100523) 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, 62092538 + ... + 62103176.

It is an arithmetic number, because the mean of its divisors is an integer number (42275869440).

Almost surely, 2^660659100623 is an apocalyptic number.

660659100623 is a deficient number, since it is larger than the sum of its proper divisors (15754810417).

660659100623 is a wasteful number, since it uses less digits than its factorization.

660659100623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13886.

The product of its (nonzero) digits is 349920, while the sum is 44.

The spelling of 660659100623 in words is "six hundred sixty billion, six hundred fifty-nine million, one hundred thousand, six hundred twenty-three".