673107656 has 64 divisors (see below), whose sum is σ = 1444852080. Its totient is φ = 291225600.

The previous prime is 673107647. The next prime is 673107679. The reversal of 673107656 is 656701376.

It can be written as a sum of positive squares in 8 ways, for example, as 5712100 + 667395556 = 2390^2 + 25834^2 .

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, 559856 + ... + 561056.

Almost surely, 2^673107656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673107656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722426040).

673107656 is an abundant number, since it is smaller than the sum of its proper divisors (771744424).

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

673107656 is a wasteful number, since it uses less digits than its factorization.

673107656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554 (or 1550 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 673107656 is about 25944.3183760915. The cubic root of 673107656 is about 876.3848138697.

The spelling of 673107656 in words is "six hundred seventy-three million, one hundred seven thousand, six hundred fifty-six".