670917744 has 120 divisors (see below), whose sum is σ = 2203990880. Its totient is φ = 186499584.

The previous prime is 670917739. The next prime is 670917749. The reversal of 670917744 is 447719076.

It is an interprime number because it is at equal distance from previous prime (670917739) and next prime (670917749).

It is a self number, because there is not a number n which added to its sum of digits gives 670917744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670917749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28302 + ... + 46290.

Almost surely, 2^670917744 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 670917744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1101995440).

670917744 is an abundant number, since it is smaller than the sum of its proper divisors (1533073136).

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

670917744 is a wasteful number, since it uses less digits than its factorization.

670917744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18047 (or 18038 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 670917744 is about 25902.0799164855. The cubic root of 670917744 is about 875.4333609531.

The spelling of 670917744 in words is "six hundred seventy million, nine hundred seventeen thousand, seven hundred forty-four".