670944768 has 80 divisors (see below), whose sum is σ = 1924991376. Its totient is φ = 206438400.

The previous prime is 670944761. The next prime is 670944847. The reversal of 670944768 is 867449076.

It is a self number, because there is not a number n which added to its sum of digits gives 670944768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670944761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3168 + ... + 36768.

Almost surely, 2^670944768 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 670944768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (962495688).

670944768 is an abundant number, since it is smaller than the sum of its proper divisors (1254046608).

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

670944768 is a wasteful number, since it uses less digits than its factorization.

670944768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33635 (or 33619 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 51.

The square root of 670944768 is about 25902.6015681823. The cubic root of 670944768 is about 875.4451147007.

The spelling of 670944768 in words is "six hundred seventy million, nine hundred forty-four thousand, seven hundred sixty-eight".