664000424 has 16 divisors (see below), whose sum is σ = 1250488800. Its totient is φ = 330536752.

The previous prime is 664000411. The next prime is 664000459. The reversal of 664000424 is 424000466.

It is a junction number, because it is equal to n+sod(n) for n = 664000393 and 664000402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181004 + ... + 184635.

It is an arithmetic number, because the mean of its divisors is an integer number (78155550).

Almost surely, 2^664000424 is an apocalyptic number.

It is an amenable number.

664000424 is a deficient number, since it is larger than the sum of its proper divisors (586488376).

664000424 is a wasteful number, since it uses less digits than its factorization.

664000424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365872 (or 365868 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 664000424 is about 25768.2056806445. The cubic root of 664000424 is about 872.4143199855.

The spelling of 664000424 in words is "six hundred sixty-four million, four hundred twenty-four", and thus it is an aban number.