670907287 has 2 divisors, whose sum is σ = 670907288. Its totient is φ = 670907286.

The previous prime is 670907191. The next prime is 670907291. The reversal of 670907287 is 782709076.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670907287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670907987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335453643 + 335453644.

It is an arithmetic number, because the mean of its divisors is an integer number (335453644).

Almost surely, 2^670907287 is an apocalyptic number.

670907287 is a deficient number, since it is larger than the sum of its proper divisors (1).

670907287 is an equidigital number, since it uses as much as digits as its factorization.

670907287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 296352, while the sum is 46.

The square root of 670907287 is about 25901.8780593223. The cubic root of 670907287 is about 875.4288127283.

The spelling of 670907287 in words is "six hundred seventy million, nine hundred seven thousand, two hundred eighty-seven".