668292911 has 16 divisors (see below), whose sum is σ = 786215808. Its totient is φ = 560028000.

The previous prime is 668292887. The next prime is 668292913. The reversal of 668292911 is 119292866.

It is a cyclic number.

It is not a de Polignac number, because 668292911 - 2¹⁸ = 668030767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668292913) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 115436 + ... + 121086.

It is an arithmetic number, because the mean of its divisors is an integer number (49138488).

Almost surely, 2^668292911 is an apocalyptic number.

668292911 is a deficient number, since it is larger than the sum of its proper divisors (117922897).

668292911 is a wasteful number, since it uses less digits than its factorization.

668292911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6502.

The product of its digits is 93312, while the sum is 44.

The square root of 668292911 is about 25851.3618790191. The cubic root of 668292911 is about 874.2902155749.

The spelling of 668292911 in words is "six hundred sixty-eight million, two hundred ninety-two thousand, nine hundred eleven".