674257897 has 2 divisors, whose sum is σ = 674257898. Its totient is φ = 674257896.

The previous prime is 674257847. The next prime is 674257901. The reversal of 674257897 is 798752476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 543635856 + 130622041 = 23316^2 + 11429^2 .

It is a cyclic number.

It is not a de Polignac number, because 674257897 - 2¹⁵ = 674225129 is a prime.

It is not a weakly prime, because it can be changed into another prime (674257847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337128948 + 337128949.

It is an arithmetic number, because the mean of its divisors is an integer number (337128949).

Almost surely, 2^674257897 is an apocalyptic number.

It is an amenable number.

674257897 is a deficient number, since it is larger than the sum of its proper divisors (1).

674257897 is an equidigital number, since it uses as much as digits as its factorization.

674257897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5927040, while the sum is 55.

The square root of 674257897 is about 25966.4764070907. The cubic root of 674257897 is about 876.8837336069.

The spelling of 674257897 in words is "six hundred seventy-four million, two hundred fifty-seven thousand, eight hundred ninety-seven".