670844416 has 80 divisors (see below), whose sum is σ = 1470763008. Its totient is φ = 303155200.

The previous prime is 670844407. The next prime is 670844431. The reversal of 670844416 is 614448076.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1751361 + ... + 1751743.

Almost surely, 2^670844416 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 670844416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (735381504).

670844416 is an abundant number, since it is smaller than the sum of its proper divisors (799918592).

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

670844416 is a wasteful number, since it uses less digits than its factorization.

670844416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 670844416 is about 25900.6643930228. The cubic root of 670844416 is about 875.4014662750.

The spelling of 670844416 in words is "six hundred seventy million, eight hundred forty-four thousand, four hundred sixteen".