674240005 has 4 divisors (see below), whose sum is σ = 809088012. Its totient is φ = 539392000.

The previous prime is 674239999. The next prime is 674240027. The reversal of 674240005 is 500042476.

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 145515969 + 528724036 = 12063^2 + 22994^2 .

It is not a de Polignac number, because 674240005 - 2⁷ = 674239877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67423996 + ... + 67424005.

It is an arithmetic number, because the mean of its divisors is an integer number (202272003).

Almost surely, 2^674240005 is an apocalyptic number.

It is an amenable number.

674240005 is a deficient number, since it is larger than the sum of its proper divisors (134848007).

674240005 is a wasteful number, since it uses less digits than its factorization.

674240005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134848006.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 674240005 is about 25966.1318836672. The cubic root of 674240005 is about 876.8759772560.

The spelling of 674240005 in words is "six hundred seventy-four million, two hundred forty thousand, five".