668007388 has 12 divisors (see below), whose sum is σ = 1169573440. Its totient is φ = 333843552.

The previous prime is 668007341. The next prime is 668007397. The reversal of 668007388 is 883700866.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30393 + ... + 47536.

Almost surely, 2^668007388 is an apocalyptic number.

It is an amenable number.

668007388 is a deficient number, since it is larger than the sum of its proper divisors (501566052).

668007388 is a wasteful number, since it uses less digits than its factorization.

668007388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80076 (or 80074 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 668007388 is about 25845.8388913960. The cubic root of 668007388 is about 874.1656865845.

The spelling of 668007388 in words is "six hundred sixty-eight million, seven thousand, three hundred eighty-eight".