671035709 has 2 divisors, whose sum is σ = 671035710. Its totient is φ = 671035708.

The previous prime is 671035667. The next prime is 671035721. The reversal of 671035709 is 907530176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 522122500 + 148913209 = 22850^2 + 12203^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671035709 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671035789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335517854 + 335517855.

It is an arithmetic number, because the mean of its divisors is an integer number (335517855).

Almost surely, 2^671035709 is an apocalyptic number.

It is an amenable number.

671035709 is a deficient number, since it is larger than the sum of its proper divisors (1).

671035709 is an equidigital number, since it uses as much as digits as its factorization.

671035709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 671035709 is about 25904.3569501349. The cubic root of 671035709 is about 875.4846660226.

The spelling of 671035709 in words is "six hundred seventy-one million, thirty-five thousand, seven hundred nine".