670037509 has 2 divisors, whose sum is σ = 670037510. Its totient is φ = 670037508.

The previous prime is 670037483. The next prime is 670037513. The reversal of 670037509 is 905730076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377524900 + 292512609 = 19430^2 + 17103^2 .

It is a cyclic number.

It is not a de Polignac number, because 670037509 - 2²⁹ = 133166597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670037569) by changing a digit.

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 as a sum of consecutive naturals, namely, 335018754 + 335018755.

It is an arithmetic number, because the mean of its divisors is an integer number (335018755).

Almost surely, 2^670037509 is an apocalyptic number.

It is an amenable number.

670037509 is a deficient number, since it is larger than the sum of its proper divisors (1).

670037509 is an equidigital number, since it uses as much as digits as its factorization.

670037509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39690, while the sum is 37.

The square root of 670037509 is about 25885.0827504955. The cubic root of 670037509 is about 875.0503411581.

The spelling of 670037509 in words is "six hundred seventy million, thirty-seven thousand, five hundred nine".