671467397 has 2 divisors, whose sum is σ = 671467398. Its totient is φ = 671467396.

The previous prime is 671467387. The next prime is 671467417. The reversal of 671467397 is 793764176.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 599319361 + 72148036 = 24481^2 + 8494^2 .

It is a cyclic number.

It is not a de Polignac number, because 671467397 - 2¹⁸ = 671205253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671467387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335733698 + 335733699.

It is an arithmetic number, because the mean of its divisors is an integer number (335733699).

Almost surely, 2^671467397 is an apocalyptic number.

It is an amenable number.

671467397 is a deficient number, since it is larger than the sum of its proper divisors (1).

671467397 is an equidigital number, since it uses as much as digits as its factorization.

671467397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1333584, while the sum is 50.

The square root of 671467397 is about 25912.6879539734. The cubic root of 671467397 is about 875.6723635396.

The spelling of 671467397 in words is "six hundred seventy-one million, four hundred sixty-seven thousand, three hundred ninety-seven".