664148192 has 24 divisors (see below), whose sum is σ = 1376361000. Its totient is φ = 314596224.

The previous prime is 664148179. The next prime is 664148213. The reversal of 664148192 is 291841466.

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 3 ways as a sum of consecutive naturals, for example, 545567 + ... + 546782.

It is an arithmetic number, because the mean of its divisors is an integer number (57348375).

Almost surely, 2^664148192 is an apocalyptic number.

It is an amenable number.

664148192 is an abundant number, since it is smaller than the sum of its proper divisors (712212808).

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

664148192 is a wasteful number, since it uses less digits than its factorization.

664148192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092378 (or 1092370 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 664148192 is about 25771.0727754977. The cubic root of 664148192 is about 872.4790314690.

The spelling of 664148192 in words is "six hundred sixty-four million, one hundred forty-eight thousand, one hundred ninety-two".