674875309 has 2 divisors, whose sum is σ = 674875310. Its totient is φ = 674875308.

The previous prime is 674875297. The next prime is 674875393. The reversal of 674875309 is 903578476.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 536154025 + 138721284 = 23155^2 + 11778^2 .

It is a cyclic number.

It is not a de Polignac number, because 674875309 - 2⁷ = 674875181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (674872309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337437654 + 337437655.

It is an arithmetic number, because the mean of its divisors is an integer number (337437655).

Almost surely, 2^674875309 is an apocalyptic number.

It is an amenable number.

674875309 is a deficient number, since it is larger than the sum of its proper divisors (1).

674875309 is an equidigital number, since it uses as much as digits as its factorization.

674875309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The square root of 674875309 is about 25978.3623232874. The cubic root of 674875309 is about 877.1513035159.

The spelling of 674875309 in words is "six hundred seventy-four million, eight hundred seventy-five thousand, three hundred nine".