667579384 has 16 divisors (see below), whose sum is σ = 1282241520. Its totient is φ = 325648320.

The previous prime is 667579369. The next prime is 667579427. The reversal of 667579384 is 483975766.

It is a happy number.

It is a congruent number.

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, 1017324 + ... + 1017979.

It is an arithmetic number, because the mean of its divisors is an integer number (80140095).

Almost surely, 2^667579384 is an apocalyptic number.

It is an amenable number.

667579384 is a deficient number, since it is larger than the sum of its proper divisors (614662136).

667579384 is a wasteful number, since it uses less digits than its factorization.

667579384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035350 (or 2035346 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 55.

The square root of 667579384 is about 25837.5576245124. The cubic root of 667579384 is about 873.9789489560.

The spelling of 667579384 in words is "six hundred sixty-seven million, five hundred seventy-nine thousand, three hundred eighty-four".