668076319 has 16 divisors (see below), whose sum is σ = 734662656. Its totient is φ = 604771200.

The previous prime is 668076313. The next prime is 668076359. The reversal of 668076319 is 913670866.

668076319 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 668076319 - 2⁵ = 668076287 is a prime.

It is a super-2 number, since 2×668076319² = 892651936017179522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668076313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84214 + ... + 91804.

It is an arithmetic number, because the mean of its divisors is an integer number (45916416).

Almost surely, 2^668076319 is an apocalyptic number.

668076319 is a deficient number, since it is larger than the sum of its proper divisors (66586337).

668076319 is a wasteful number, since it uses less digits than its factorization.

668076319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7806.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 668076319 is about 25847.1723598540. The cubic root of 668076319 is about 874.1957536384.

The spelling of 668076319 in words is "six hundred sixty-eight million, seventy-six thousand, three hundred nineteen".