674942987 has 2 divisors, whose sum is σ = 674942988. Its totient is φ = 674942986.

The previous prime is 674942923. The next prime is 674943001. The reversal of 674942987 is 789249476.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 674942987 - 2⁶ = 674942923 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (674944987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337471493 + 337471494.

It is an arithmetic number, because the mean of its divisors is an integer number (337471494).

Almost surely, 2^674942987 is an apocalyptic number.

674942987 is a deficient number, since it is larger than the sum of its proper divisors (1).

674942987 is an equidigital number, since it uses as much as digits as its factorization.

674942987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 56.

The square root of 674942987 is about 25979.6648746669. The cubic root of 674942987 is about 877.1806234317.

The spelling of 674942987 in words is "six hundred seventy-four million, nine hundred forty-two thousand, nine hundred eighty-seven".