670736685632 has 126 divisors (see below), whose sum is σ = 1448318646918. Its totient is φ = 308060073984.

The previous prime is 670736685581. The next prime is 670736685653. The reversal of 670736685632 is 236586637076.

It can be written as a sum of positive squares in 9 ways, for example, as 506795914816 + 163940770816 = 711896^2 + 404896^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 782656148 + ... + 782657004.

Almost surely, 2^670736685632 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 670736685632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (724159323459).

670736685632 is an abundant number, since it is smaller than the sum of its proper divisors (777581961286).

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

670736685632 is an equidigital number, since it uses as much as digits as its factorization.

670736685632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433 (or 1141 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 59.

The spelling of 670736685632 in words is "six hundred seventy billion, seven hundred thirty-six million, six hundred eighty-five thousand, six hundred thirty-two".