670733856 has 144 divisors (see below), whose sum is σ = 2120751360. Its totient is φ = 199687680.

The previous prime is 670733831. The next prime is 670733879. The reversal of 670733856 is 658337076.

670733856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113175 + ... + 118953.

It is an arithmetic number, because the mean of its divisors is an integer number (14727440).

Almost surely, 2^670733856 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 670733856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1060375680).

670733856 is an abundant number, since it is smaller than the sum of its proper divisors (1450017504).

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

670733856 is a wasteful number, since it uses less digits than its factorization.

670733856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5839 (or 5828 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 670733856 is about 25898.5299968936. The cubic root of 670733856 is about 875.3533728070.

The spelling of 670733856 in words is "six hundred seventy million, seven hundred thirty-three thousand, eight hundred fifty-six".