667400613392 has 40 divisors (see below), whose sum is σ = 1332831716376. Its totient is φ = 323509165056.

The previous prime is 667400613389. The next prime is 667400613403. The reversal of 667400613392 is 293316004766.

It can be written as a sum of positive squares in 4 ways, for example, as 23612624896 + 643787988496 = 153664^2 + 802364^2 .

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 7 ways as a sum of consecutive naturals, for example, 1870973 + ... + 2198940.

Almost surely, 2^667400613392 is an apocalyptic number.

It is an amenable number.

667400613392 is a deficient number, since it is larger than the sum of its proper divisors (665431102984).

667400613392 is a wasteful number, since it uses less digits than its factorization.

667400613392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070235 (or 4070229 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 47.

The spelling of 667400613392 in words is "six hundred sixty-seven billion, four hundred million, six hundred thirteen thousand, three hundred ninety-two".