674137693 has 2 divisors, whose sum is σ = 674137694. Its totient is φ = 674137692.

The previous prime is 674137679. The next prime is 674137721. The reversal of 674137693 is 396731476.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 570158884 + 103978809 = 23878^2 + 10197^2 .

It is a cyclic number.

It is not a de Polignac number, because 674137693 - 2⁹ = 674137181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (674137663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337068846 + 337068847.

It is an arithmetic number, because the mean of its divisors is an integer number (337068847).

Almost surely, 2^674137693 is an apocalyptic number.

It is an amenable number.

674137693 is a deficient number, since it is larger than the sum of its proper divisors (1).

674137693 is an equidigital number, since it uses as much as digits as its factorization.

674137693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 46.

The square root of 674137693 is about 25964.1617041645. The cubic root of 674137693 is about 876.8316214022.

The spelling of 674137693 in words is "six hundred seventy-four million, one hundred thirty-seven thousand, six hundred ninety-three".