670337440 has 24 divisors (see below), whose sum is σ = 1583672580. Its totient is φ = 268134912.

The previous prime is 670337431. The next prime is 670337467. The reversal of 670337440 is 44733076.

It can be written as a sum of positive squares in 2 ways, for example, as 649434256 + 20903184 = 25484^2 + 4572^2 .

It is a junction number, because it is equal to n+sod(n) for n = 670337396 and 670337405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2094645 + ... + 2094964.

Almost surely, 2^670337440 is an apocalyptic number.

It is an amenable number.

670337440 is an abundant number, since it is smaller than the sum of its proper divisors (913335140).

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

670337440 is a wasteful number, since it uses less digits than its factorization.

670337440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4189624 (or 4189616 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 34.

The square root of 670337440 is about 25890.8756128486. The cubic root of 670337440 is about 875.1808888607.

The spelling of 670337440 in words is "six hundred seventy million, three hundred thirty-seven thousand, four hundred forty".