670165841 has 2 divisors, whose sum is σ = 670165842. Its totient is φ = 670165840.

The previous prime is 670165831. The next prime is 670165871. The reversal of 670165841 is 148561076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 618268225 + 51897616 = 24865^2 + 7204^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670165841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 670165795 and 670165804.

It is not a weakly prime, because it can be changed into another prime (670165831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335082920 + 335082921.

It is an arithmetic number, because the mean of its divisors is an integer number (335082921).

Almost surely, 2^670165841 is an apocalyptic number.

It is an amenable number.

670165841 is a deficient number, since it is larger than the sum of its proper divisors (1).

670165841 is an equidigital number, since it uses as much as digits as its factorization.

670165841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 670165841 is about 25887.5615112741. The cubic root of 670165841 is about 875.1062035988.

The spelling of 670165841 in words is "six hundred seventy million, one hundred sixty-five thousand, eight hundred forty-one".