673706733664 has 12 divisors (see below), whose sum is σ = 1326360131964. Its totient is φ = 336853366816.

The previous prime is 673706733647. The next prime is 673706733683. The reversal of 673706733664 is 466337607376.

It is a junction number, because it is equal to n+sod(n) for n = 673706733599 and 673706733608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10526667682 + ... + 10526667745.

It is an arithmetic number, because the mean of its divisors is an integer number (110530010997).

Almost surely, 2^673706733664 is an apocalyptic number.

It is an amenable number.

673706733664 is a deficient number, since it is larger than the sum of its proper divisors (652653398300).

673706733664 is a wasteful number, since it uses less digits than its factorization.

673706733664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21053335437 (or 21053335429 counting only the distinct ones).

The product of its (nonzero) digits is 48009024, while the sum is 58.

The spelling of 673706733664 in words is "six hundred seventy-three billion, seven hundred six million, seven hundred thirty-three thousand, six hundred sixty-four".