123479664 has 80 divisors (see below), whose sum is σ = 397712640. Its totient is φ = 32071680.

The previous prime is 123479647. The next prime is 123479711. The reversal of 123479664 is 466974321.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13009 + ... + 20400.

It is an arithmetic number, because the mean of its divisors is an integer number (4971408).

Almost surely, 2^123479664 is an apocalyptic number.

123479664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123479664 is an abundant number, since it is smaller than the sum of its proper divisors (274232976).

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

123479664 is a wasteful number, since it uses less digits than its factorization.

123479664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33438 (or 33432 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 123479664 is about 11112.1403878821. The cubic root of 123479664 is about 497.9646109592.

The spelling of 123479664 in words is "one hundred twenty-three million, four hundred seventy-nine thousand, six hundred sixty-four".