670912901 has 2 divisors, whose sum is σ = 670912902. Its totient is φ = 670912900.

The previous prime is 670912877. The next prime is 670912937. The reversal of 670912901 is 109219076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 484044001 + 186868900 = 22001^2 + 13670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670912901 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670915901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335456450 + 335456451.

It is an arithmetic number, because the mean of its divisors is an integer number (335456451).

Almost surely, 2^670912901 is an apocalyptic number.

It is an amenable number.

670912901 is a deficient number, since it is larger than the sum of its proper divisors (1).

670912901 is an equidigital number, since it uses as much as digits as its factorization.

670912901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 670912901 is about 25901.9864296158. The cubic root of 670912901 is about 875.4312545180.

The spelling of 670912901 in words is "six hundred seventy million, nine hundred twelve thousand, nine hundred one".