668007474674 has 8 divisors (see below), whose sum is σ = 1036563322860. Its totient is φ = 322486367056.

The previous prime is 668007474653. The next prime is 668007474721. The reversal of 668007474674 is 476474700866.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 666533452225 + 1474022449 = 816415^2 + 38393^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 5758685069 + ... + 5758685184.

Almost surely, 2^668007474674 is an apocalyptic number.

668007474674 is a deficient number, since it is larger than the sum of its proper divisors (368555848186).

668007474674 is a wasteful number, since it uses less digits than its factorization.

668007474674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11517370284.

The product of its (nonzero) digits is 37933056, while the sum is 59.

The spelling of 668007474674 in words is "six hundred sixty-eight billion, seven million, four hundred seventy-four thousand, six hundred seventy-four".