670745417 has 2 divisors, whose sum is σ = 670745418. Its totient is φ = 670745416.

The previous prime is 670745401. The next prime is 670745423. The reversal of 670745417 is 714547076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 587771536 + 82973881 = 24244^2 + 9109^2 .

It is a cyclic number.

It is not a de Polignac number, because 670745417 - 2⁴ = 670745401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (670745477) 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, 335372708 + 335372709.

It is an arithmetic number, because the mean of its divisors is an integer number (335372709).

Almost surely, 2^670745417 is an apocalyptic number.

It is an amenable number.

670745417 is a deficient number, since it is larger than the sum of its proper divisors (1).

670745417 is an equidigital number, since it uses as much as digits as its factorization.

670745417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 670745417 is about 25898.7531939281. The cubic root of 670745417 is about 875.3584020756.

The spelling of 670745417 in words is "six hundred seventy million, seven hundred forty-five thousand, four hundred seventeen".