671670497 has 2 divisors, whose sum is σ = 671670498. Its totient is φ = 671670496.

The previous prime is 671670481. The next prime is 671670551. The reversal of 671670497 is 794076176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 354794896 + 316875601 = 18836^2 + 17801^2 .

It is a cyclic number.

It is not a de Polignac number, because 671670497 - 2⁴ = 671670481 is a prime.

It is a super-2 number, since 2×671670497² = 902282513080454018, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (671670407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335835248 + 335835249.

It is an arithmetic number, because the mean of its divisors is an integer number (335835249).

Almost surely, 2^671670497 is an apocalyptic number.

It is an amenable number.

671670497 is a deficient number, since it is larger than the sum of its proper divisors (1).

671670497 is an equidigital number, since it uses as much as digits as its factorization.

671670497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 444528, while the sum is 47.

The square root of 671670497 is about 25916.6065872830. The cubic root of 671670497 is about 875.7606433923.

The spelling of 671670497 in words is "six hundred seventy-one million, six hundred seventy thousand, four hundred ninety-seven".