674636239 has 2 divisors, whose sum is σ = 674636240. Its totient is φ = 674636238.

The previous prime is 674636231. The next prime is 674636269. The reversal of 674636239 is 932636476.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 674636239 - 2³ = 674636231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (674636231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337318119 + 337318120.

It is an arithmetic number, because the mean of its divisors is an integer number (337318120).

Almost surely, 2^674636239 is an apocalyptic number.

674636239 is a deficient number, since it is larger than the sum of its proper divisors (1).

674636239 is an equidigital number, since it uses as much as digits as its factorization.

674636239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 46.

The square root of 674636239 is about 25973.7605864072. The cubic root of 674636239 is about 877.0477163170.

The spelling of 674636239 in words is "six hundred seventy-four million, six hundred thirty-six thousand, two hundred thirty-nine".