668963034 has 24 divisors (see below), whose sum is σ = 1488594900. Its totient is φ = 216960768.

The previous prime is 668963003. The next prime is 668963081. The reversal of 668963034 is 430369866.

668963034 is a `hidden beast` number, since 6 + 6 + 8 + 9 + 630 + 3 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 573842025 + 95121009 = 23955^2 + 9753^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 501559 + ... + 502890.

Almost surely, 2^668963034 is an apocalyptic number.

668963034 is an abundant number, since it is smaller than the sum of its proper divisors (819631866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

668963034 is a wasteful number, since it uses less digits than its factorization.

668963034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004494 (or 1004491 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The square root of 668963034 is about 25864.3197088189. The cubic root of 668963034 is about 874.5823460926.

The spelling of 668963034 in words is "six hundred sixty-eight million, nine hundred sixty-three thousand, thirty-four".