123317664 has 24 divisors (see below), whose sum is σ = 323709120. Its totient is φ = 41105856.

The previous prime is 123317641. The next prime is 123317671. The reversal of 123317664 is 466713321.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642184 + ... + 642375.

It is an arithmetic number, because the mean of its divisors is an integer number (13487880).

Almost surely, 2^123317664 is an apocalyptic number.

It is an amenable number.

123317664 is an abundant number, since it is smaller than the sum of its proper divisors (200391456).

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

123317664 is a wasteful number, since it uses less digits than its factorization.

123317664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284572 (or 1284564 counting only the distinct ones).

The product of its digits is 18144, while the sum is 33.

The square root of 123317664 is about 11104.8486707384. The cubic root of 123317664 is about 497.7467462822.

The spelling of 123317664 in words is "one hundred twenty-three million, three hundred seventeen thousand, six hundred sixty-four".