670740040 has 32 divisors (see below), whose sum is σ = 1511730360. Its totient is φ = 267840000.

The previous prime is 670740023. The next prime is 670740067. The reversal of 670740040 is 40047076.

It can be written as a sum of positive squares in 4 ways, for example, as 669670884 + 1069156 = 25878^2 + 1034^2 .

It is a junction number, because it is equal to n+sod(n) for n = 670739990 and 670740008.

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 7 ways as a sum of consecutive naturals, for example, 10090 + ... + 37990.

Almost surely, 2^670740040 is an apocalyptic number.

It is an amenable number.

670740040 is an abundant number, since it is smaller than the sum of its proper divisors (840990320).

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

670740040 is a wasteful number, since it uses less digits than its factorization.

670740040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28513 (or 28509 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 670740040 is about 25898.6493856340. The cubic root of 670740040 is about 875.3560629791.

The spelling of 670740040 in words is "six hundred seventy million, seven hundred forty thousand, forty".