670783171 has 2 divisors, whose sum is σ = 670783172. Its totient is φ = 670783170.

The previous prime is 670783151. The next prime is 670783207. The reversal of 670783171 is 171387076.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670783171 - 2²³ = 662394563 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (670783111) 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, 335391585 + 335391586.

It is an arithmetic number, because the mean of its divisors is an integer number (335391586).

Almost surely, 2^670783171 is an apocalyptic number.

670783171 is a deficient number, since it is larger than the sum of its proper divisors (1).

670783171 is an equidigital number, since it uses as much as digits as its factorization.

670783171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 40.

The square root of 670783171 is about 25899.4820604583. The cubic root of 670783171 is about 875.3748254260.

The spelling of 670783171 in words is "six hundred seventy million, seven hundred eighty-three thousand, one hundred seventy-one".