275079681 has 12 divisors (see below), whose sum is σ = 401434852. Its totient is φ = 181495296.

The previous prime is 275079677. The next prime is 275079713. The reversal of 275079681 is 186970572.

It can be written as a sum of positive squares in 2 ways, for example, as 127238400 + 147841281 = 11280^2 + 12159^2 .

It is not a de Polignac number, because 275079681 - 2² = 275079677 is a prime.

It is a super-2 number, since 2×275079681² = 151337661798123522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275079671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156676 + ... + 158421.

Almost surely, 2^275079681 is an apocalyptic number.

It is an amenable number.

275079681 is a deficient number, since it is larger than the sum of its proper divisors (126355171).

275079681 is a wasteful number, since it uses less digits than its factorization.

275079681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315200 (or 315197 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The square root of 275079681 is about 16585.5262503184. The cubic root of 275079681 is about 650.3585248921.

The spelling of 275079681 in words is "two hundred seventy-five million, seventy-nine thousand, six hundred eighty-one".