673632995720 has 64 divisors (see below), whose sum is σ = 1521728596800. Its totient is φ = 268377429760.

The previous prime is 673632995701. The next prime is 673632995731. The reversal of 673632995720 is 27599236376.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 673632995720.

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, 55633907 + ... + 55646013.

It is an arithmetic number, because the mean of its divisors is an integer number (23777009325).

Almost surely, 2^673632995720 is an apocalyptic number.

It is an amenable number.

673632995720 is an abundant number, since it is smaller than the sum of its proper divisors (848095601080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673632995720 is a wasteful number, since it uses less digits than its factorization.

673632995720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17558 (or 17554 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 59.

The spelling of 673632995720 in words is "six hundred seventy-three billion, six hundred thirty-two million, nine hundred ninety-five thousand, seven hundred twenty".