670561072 has 20 divisors (see below), whose sum is σ = 1367592280. Its totient is φ = 317634048.

The previous prime is 670561069. The next prime is 670561117. The reversal of 670561072 is 270165076.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1102593 + ... + 1103200.

It is an arithmetic number, because the mean of its divisors is an integer number (68379614).

Almost surely, 2^670561072 is an apocalyptic number.

It is an amenable number.

670561072 is an abundant number, since it is smaller than the sum of its proper divisors (697031208).

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

670561072 is a wasteful number, since it uses less digits than its factorization.

670561072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205820 (or 2205814 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 670561072 is about 25895.1939942531. The cubic root of 670561072 is about 875.2782013884.

The spelling of 670561072 in words is "six hundred seventy million, five hundred sixty-one thousand, seventy-two".