674660387 has 2 divisors, whose sum is σ = 674660388. Its totient is φ = 674660386.

The previous prime is 674660333. The next prime is 674660431. The reversal of 674660387 is 783066476.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 674660387 - 2¹⁸ = 674398243 is a prime.

It is not a weakly prime, because it can be changed into another prime (674660687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337330193 + 337330194.

It is an arithmetic number, because the mean of its divisors is an integer number (337330194).

Almost surely, 2^674660387 is an apocalyptic number.

674660387 is a deficient number, since it is larger than the sum of its proper divisors (1).

674660387 is an equidigital number, since it uses as much as digits as its factorization.

674660387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The square root of 674660387 is about 25974.2254359971. The cubic root of 674660387 is about 877.0581805713.

The spelling of 674660387 in words is "six hundred seventy-four million, six hundred sixty thousand, three hundred eighty-seven".