660423424 has 36 divisors (see below), whose sum is σ = 1319913000. Its totient is φ = 329799680.

The previous prime is 660423389. The next prime is 660423457. The reversal of 660423424 is 424324066.

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, 382884 + ... + 384604.

It is an arithmetic number, because the mean of its divisors is an integer number (36664250).

Almost surely, 2^660423424 is an apocalyptic number.

660423424 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

660423424 is a deficient number, since it is larger than the sum of its proper divisors (659489576).

660423424 is a wasteful number, since it uses less digits than its factorization.

660423424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236 (or 3222 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

The square root of 660423424 is about 25698.7047144404. The cubic root of 660423424 is about 870.8449201320.

The spelling of 660423424 in words is "six hundred sixty million, four hundred twenty-three thousand, four hundred twenty-four".