674794791085 has 4 divisors (see below), whose sum is σ = 809753749308. Its totient is φ = 539835832864.

The previous prime is 674794791079. The next prime is 674794791089. The reversal of 674794791085 is 580197497476.

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 367403275044 + 307391516041 = 606138^2 + 554429^2 .

It is a cyclic number.

It is not a de Polignac number, because 674794791085 - 2¹⁵ = 674794758317 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 674794791085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674794791089) 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, 67479479104 + ... + 67479479113.

It is an arithmetic number, because the mean of its divisors is an integer number (202438437327).

Almost surely, 2^674794791085 is an apocalyptic number.

It is an amenable number.

674794791085 is a deficient number, since it is larger than the sum of its proper divisors (134958958223).

674794791085 is a wasteful number, since it uses less digits than its factorization.

674794791085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134958958222.

The product of its (nonzero) digits is 106686720, while the sum is 67.

The spelling of 674794791085 in words is "six hundred seventy-four billion, seven hundred ninety-four million, seven hundred ninety-one thousand, eighty-five".