674201509 has 2 divisors, whose sum is σ = 674201510. Its totient is φ = 674201508.

The previous prime is 674201477. The next prime is 674201513. The reversal of 674201509 is 905102476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 638977284 + 35224225 = 25278^2 + 5935^2 .

It is a cyclic number.

It is not a de Polignac number, because 674201509 - 2⁵ = 674201477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (674211509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337100754 + 337100755.

It is an arithmetic number, because the mean of its divisors is an integer number (337100755).

Almost surely, 2^674201509 is an apocalyptic number.

It is an amenable number.

674201509 is a deficient number, since it is larger than the sum of its proper divisors (1).

674201509 is an equidigital number, since it uses as much as digits as its factorization.

674201509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 674201509 is about 25965.3905997965. The cubic root of 674201509 is about 876.8592884114.

The spelling of 674201509 in words is "six hundred seventy-four million, two hundred one thousand, five hundred nine".