674236985 has 4 divisors (see below), whose sum is σ = 809084388. Its totient is φ = 539389584.

The previous prime is 674236967. The next prime is 674236991. The reversal of 674236985 is 589632476.

It is a happy number.

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 514745344 + 159491641 = 22688^2 + 12629^2 .

It is a cyclic number.

It is not a de Polignac number, because 674236985 - 2¹⁴ = 674220601 is a prime.

It is a Duffinian 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, 67423694 + ... + 67423703.

It is an arithmetic number, because the mean of its divisors is an integer number (202271097).

Almost surely, 2^674236985 is an apocalyptic number.

It is an amenable number.

674236985 is a deficient number, since it is larger than the sum of its proper divisors (134847403).

674236985 is a wasteful number, since it uses less digits than its factorization.

674236985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134847402.

The product of its digits is 2177280, while the sum is 50.

The square root of 674236985 is about 25966.0737309282. The cubic root of 674236985 is about 876.8746680440.

The spelling of 674236985 in words is "six hundred seventy-four million, two hundred thirty-six thousand, nine hundred eighty-five".