668067481474 has 32 divisors (see below), whose sum is σ = 1085634213120. Its totient is φ = 307379067072.

The previous prime is 668067481463. The next prime is 668067481517. The reversal of 668067481474 is 474184760866.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534454 + ... + 1273489.

It is an arithmetic number, because the mean of its divisors is an integer number (33926069160).

Almost surely, 2^668067481474 is an apocalyptic number.

668067481474 is a deficient number, since it is larger than the sum of its proper divisors (417566731646).

668067481474 is a wasteful number, since it uses less digits than its factorization.

668067481474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1808274.

The product of its (nonzero) digits is 43352064, while the sum is 61.

The spelling of 668067481474 in words is "six hundred sixty-eight billion, sixty-seven million, four hundred eighty-one thousand, four hundred seventy-four".