666674006734 has 16 divisors (see below), whose sum is σ = 1001759181696. Its totient is φ = 332754622200.

The previous prime is 666674006701. The next prime is 666674006759. The reversal of 666674006734 is 437600476666.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3886929 + ... + 4054819.

It is an arithmetic number, because the mean of its divisors is an integer number (62609948856).

Almost surely, 2^666674006734 is an apocalyptic number.

666674006734 is a deficient number, since it is larger than the sum of its proper divisors (335085174962).

666674006734 is a wasteful number, since it uses less digits than its factorization.

666674006734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171351.

The product of its (nonzero) digits is 18289152, while the sum is 55.

The spelling of 666674006734 in words is "six hundred sixty-six billion, six hundred seventy-four million, six thousand, seven hundred thirty-four".