670567840 has 24 divisors (see below), whose sum is σ = 1584216900. Its totient is φ = 268227072.

The previous prime is 670567813. The next prime is 670567867. The reversal of 670567840 is 48765076.

It is an interprime number because it is at equal distance from previous prime (670567813) and next prime (670567867).

It can be written as a sum of positive squares in 2 ways, for example, as 602604304 + 67963536 = 24548^2 + 8244^2 .

It is a super-2 number, since 2×670567840² = 899322456084531200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

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, 2095365 + ... + 2095684.

Almost surely, 2^670567840 is an apocalyptic number.

It is an amenable number.

670567840 is an abundant number, since it is smaller than the sum of its proper divisors (913649060).

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

670567840 is a wasteful number, since it uses less digits than its factorization.

670567840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4191064 (or 4191056 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 670567840 is about 25895.3246745431. The cubic root of 670567840 is about 875.2811461179.

The spelling of 670567840 in words is "six hundred seventy million, five hundred sixty-seven thousand, eight hundred forty".