670757897 has 2 divisors, whose sum is σ = 670757898. Its totient is φ = 670757896.

The previous prime is 670757887. The next prime is 670757951. The reversal of 670757897 is 798757076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 634082761 + 36675136 = 25181^2 + 6056^2 .

It is a cyclic number.

It is not a de Polignac number, because 670757897 - 2⁶ = 670757833 is a prime.

It is not a weakly prime, because it can be changed into another prime (670757807) 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, 335378948 + 335378949.

It is an arithmetic number, because the mean of its divisors is an integer number (335378949).

Almost surely, 2^670757897 is an apocalyptic number.

It is an amenable number.

670757897 is a deficient number, since it is larger than the sum of its proper divisors (1).

670757897 is an equidigital number, since it uses as much as digits as its factorization.

670757897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5186160, while the sum is 56.

The square root of 670757897 is about 25898.9941310469. The cubic root of 670757897 is about 875.3638310629.

The spelling of 670757897 in words is "six hundred seventy million, seven hundred fifty-seven thousand, eight hundred ninety-seven".