670350997 has 2 divisors, whose sum is σ = 670350998. Its totient is φ = 670350996.

The previous prime is 670350983. The next prime is 670351051. The reversal of 670350997 is 799053076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 645210801 + 25140196 = 25401^2 + 5014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670350997 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 (670350397) 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, 335175498 + 335175499.

It is an arithmetic number, because the mean of its divisors is an integer number (335175499).

Almost surely, 2^670350997 is an apocalyptic number.

It is an amenable number.

670350997 is a deficient number, since it is larger than the sum of its proper divisors (1).

670350997 is an equidigital number, since it uses as much as digits as its factorization.

670350997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 357210, while the sum is 46.

The square root of 670350997 is about 25891.1374219056. The cubic root of 670350997 is about 875.1867887487.

The spelling of 670350997 in words is "six hundred seventy million, three hundred fifty thousand, nine hundred ninety-seven".