668366307 has 24 divisors (see below), whose sum is σ = 1117309440. Its totient is φ = 377086320.

The previous prime is 668366299. The next prime is 668366311. The reversal of 668366307 is 703663866.

668366307 is a `hidden beast` number, since 6 + 6 + 8 + 3 + 6 + 630 + 7 = 666.

It is not a de Polignac number, because 668366307 - 2³ = 668366299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (668366327) 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 23 ways as a sum of consecutive naturals, for example, 62169 + ... + 72122.

It is an arithmetic number, because the mean of its divisors is an integer number (46554560).

Almost surely, 2^668366307 is an apocalyptic number.

668366307 is a deficient number, since it is larger than the sum of its proper divisors (448943133).

668366307 is a wasteful number, since it uses less digits than its factorization.

668366307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134383 (or 134380 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The square root of 668366307 is about 25852.7814170932. The cubic root of 668366307 is about 874.3222210297.

The spelling of 668366307 in words is "six hundred sixty-eight million, three hundred sixty-six thousand, three hundred seven".