670561073 has 24 divisors (see below), whose sum is σ = 878681088. Its totient is φ = 499329792.

The previous prime is 670561069. The next prime is 670561117. The reversal of 670561073 is 370165076.

It is not a de Polignac number, because 670561073 - 2² = 670561069 is a prime.

It is a super-2 number, since 2×670561073² = 899304305245822658, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (670561033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3440 + ... + 36782.

It is an arithmetic number, because the mean of its divisors is an integer number (36611712).

Almost surely, 2^670561073 is an apocalyptic number.

It is an amenable number.

670561073 is a deficient number, since it is larger than the sum of its proper divisors (208120015).

670561073 is a wasteful number, since it uses less digits than its factorization.

670561073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33393 (or 33380 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 670561073 is about 25895.1940135617. The cubic root of 670561073 is about 875.2782018235.

The spelling of 670561073 in words is "six hundred seventy million, five hundred sixty-one thousand, seventy-three".