670740320 has 96 divisors (see below), whose sum is σ = 1651739040. Its totient is φ = 257167360.

The previous prime is 670740311. The next prime is 670740373. The reversal of 670740320 is 23047076.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386174 + ... + 387906.

It is an arithmetic number, because the mean of its divisors is an integer number (17205615).

Almost surely, 2^670740320 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 670740320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (825869520).

670740320 is an abundant number, since it is smaller than the sum of its proper divisors (980998720).

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

670740320 is a wasteful number, since it uses less digits than its factorization.

670740320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848 (or 1840 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 670740320 is about 25898.6547913207. The cubic root of 670740320 is about 875.3561847847.

Adding to 670740320 its reverse (23047076), we get a palindrome (693787396).

The spelling of 670740320 in words is "six hundred seventy million, seven hundred forty thousand, three hundred twenty".