274985685 has 80 divisors (see below), whose sum is σ = 549465840. Its totient is φ = 130636800.

The previous prime is 274985663. The next prime is 274985687. The reversal of 274985685 is 586589472.

274985685 is a `hidden beast` number, since 2 + 74 + 9 + 8 + 568 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 54730404 + 220255281 = 7398^2 + 14841^2 .

It is not a de Polignac number, because 274985685 - 2⁸ = 274985429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274985687) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 151785 + ... + 153585.

It is an arithmetic number, because the mean of its divisors is an integer number (6868323).

Almost surely, 2^274985685 is an apocalyptic number.

It is an amenable number.

274985685 is a deficient number, since it is larger than the sum of its proper divisors (274480155).

274985685 is a wasteful number, since it uses less digits than its factorization.

274985685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860 (or 1851 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The square root of 274985685 is about 16582.6923326702. The cubic root of 274985685 is about 650.2844396138.

The spelling of 274985685 in words is "two hundred seventy-four million, nine hundred eighty-five thousand, six hundred eighty-five".