670018457 has 2 divisors, whose sum is σ = 670018458. Its totient is φ = 670018456.

The previous prime is 670018423. The next prime is 670018477. The reversal of 670018457 is 754810076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 341103961 + 328914496 = 18469^2 + 18136^2 .

It is a cyclic number.

It is not a de Polignac number, because 670018457 - 2⁸ = 670018201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 670018457.

It is not a weakly prime, because it can be changed into another prime (670018477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335009228 + 335009229.

It is an arithmetic number, because the mean of its divisors is an integer number (335009229).

Almost surely, 2^670018457 is an apocalyptic number.

It is an amenable number.

670018457 is a deficient number, since it is larger than the sum of its proper divisors (1).

670018457 is an equidigital number, since it uses as much as digits as its factorization.

670018457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 670018457 is about 25884.7147366935. The cubic root of 670018457 is about 875.0420472855.

The spelling of 670018457 in words is "six hundred seventy million, eighteen thousand, four hundred fifty-seven".