674007391 has 2 divisors, whose sum is σ = 674007392. Its totient is φ = 674007390.

The previous prime is 674007377. The next prime is 674007403. The reversal of 674007391 is 193700476.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 674007391 - 2⁷ = 674007263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 674007391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (674007991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337003695 + 337003696.

It is an arithmetic number, because the mean of its divisors is an integer number (337003696).

Almost surely, 2^674007391 is an apocalyptic number.

674007391 is a deficient number, since it is larger than the sum of its proper divisors (1).

674007391 is an equidigital number, since it uses as much as digits as its factorization.

674007391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 674007391 is about 25961.6523164455. The cubic root of 674007391 is about 876.7751244001.

The spelling of 674007391 in words is "six hundred seventy-four million, seven thousand, three hundred ninety-one".