674687089 has 4 divisors (see below), whose sum is σ = 681642724. Its totient is φ = 667731456.

The previous prime is 674687077. The next prime is 674687099. The reversal of 674687089 is 980786476.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 195077089 + 479610000 = 13967^2 + 21900^2 .

It is a cyclic number.

It is not a de Polignac number, because 674687089 - 2¹⁷ = 674556017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (674687029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3477672 + ... + 3477865.

It is an arithmetic number, because the mean of its divisors is an integer number (170410681).

Almost surely, 2^674687089 is an apocalyptic number.

It is an amenable number.

674687089 is a deficient number, since it is larger than the sum of its proper divisors (6955635).

674687089 is an equidigital number, since it uses as much as digits as its factorization.

674687089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6955634.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The square root of 674687089 is about 25974.7394404641. The cubic root of 674687089 is about 877.0697512811.

The spelling of 674687089 in words is "six hundred seventy-four million, six hundred eighty-seven thousand, eighty-nine".