674553409 has 6 divisors (see below), whose sum is σ = 711925170. Its totient is φ = 639050256.

The previous prime is 674553377. The next prime is 674553437. The reversal of 674553409 is 904355476.

It can be written as a sum of positive squares in only one way, i.e., 446392384 + 228161025 = 21128^2 + 15105^2 .

It is not a de Polignac number, because 674553409 - 2⁵ = 674553377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (674553449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 933924 + ... + 934645.

It is an arithmetic number, because the mean of its divisors is an integer number (118654195).

Almost surely, 2^674553409 is an apocalyptic number.

It is an amenable number.

674553409 is a deficient number, since it is larger than the sum of its proper divisors (37371761).

674553409 is a wasteful number, since it uses less digits than its factorization.

674553409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868607 (or 1868588 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 43.

The square root of 674553409 is about 25972.1660436707. The cubic root of 674553409 is about 877.0118210046.

The spelling of 674553409 in words is "six hundred seventy-four million, five hundred fifty-three thousand, four hundred nine".