670737816 has 96 divisors (see below), whose sum is σ = 2092147200. Its totient is φ = 190157760.

The previous prime is 670737773. The next prime is 670737833. The reversal of 670737816 is 618737076.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 60945 + ... + 71103.

It is an arithmetic number, because the mean of its divisors is an integer number (21793200).

Almost surely, 2^670737816 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 670737816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1046073600).

670737816 is an abundant number, since it is smaller than the sum of its proper divisors (1421409384).

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

670737816 is a wasteful number, since it uses less digits than its factorization.

670737816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10309 (or 10302 counting only the distinct ones).

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

The square root of 670737816 is about 25898.6064489964. The cubic root of 670737816 is about 875.3550954935.

The spelling of 670737816 in words is "six hundred seventy million, seven hundred thirty-seven thousand, eight hundred sixteen".