670409071 has 2 divisors, whose sum is σ = 670409072. Its totient is φ = 670409070.

The previous prime is 670409039. The next prime is 670409147. The reversal of 670409071 is 170904076.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670409071 - 2⁵ = 670409039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670407071) 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, 335204535 + 335204536.

It is an arithmetic number, because the mean of its divisors is an integer number (335204536).

Almost surely, 2^670409071 is an apocalyptic number.

670409071 is a deficient number, since it is larger than the sum of its proper divisors (1).

670409071 is an equidigital number, since it uses as much as digits as its factorization.

670409071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 670409071 is about 25892.2589010693. The cubic root of 670409071 is about 875.2120611459.

The spelling of 670409071 in words is "six hundred seventy million, four hundred nine thousand, seventy-one".