664326674734 has 16 divisors (see below), whose sum is σ = 1002896949600. Its totient is φ = 330033649824.

The previous prime is 664326674681. The next prime is 664326674749. The reversal of 664326674734 is 437476623466.

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, 1266169 + ... + 1712260.

It is an arithmetic number, because the mean of its divisors is an integer number (62681059350).

Almost surely, 2^664326674734 is an apocalyptic number.

664326674734 is a deficient number, since it is larger than the sum of its proper divisors (338570274866).

664326674734 is a wasteful number, since it uses less digits than its factorization.

664326674734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979147.

The product of its digits is 73156608, while the sum is 58.

The spelling of 664326674734 in words is "six hundred sixty-four billion, three hundred twenty-six million, six hundred seventy-four thousand, seven hundred thirty-four".