670898791 has 2 divisors, whose sum is σ = 670898792. Its totient is φ = 670898790.

The previous prime is 670898777. The next prime is 670898803. The reversal of 670898791 is 197898076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 670898791 - 2⁹ = 670898279 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670898491) 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, 335449395 + 335449396.

It is an arithmetic number, because the mean of its divisors is an integer number (335449396).

Almost surely, 2^670898791 is an apocalyptic number.

670898791 is a deficient number, since it is larger than the sum of its proper divisors (1).

670898791 is an equidigital number, since it uses as much as digits as its factorization.

670898791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 55.

The square root of 670898791 is about 25901.7140552512. The cubic root of 670898791 is about 875.4251173967.

The spelling of 670898791 in words is "six hundred seventy million, eight hundred ninety-eight thousand, seven hundred ninety-one".