270771991 has 18 divisors (see below), whose sum is σ = 320010768. Its totient is φ = 228440520.

The previous prime is 270771967. The next prime is 270771997. The reversal of 270771991 is 199177072.

It is not a de Polignac number, because 270771991 - 2¹¹ = 270769943 is a prime.

It is a super-2 number, since 2×270771991² = 146634942220208162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (270771997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 219346 + ... + 220576.

It is an arithmetic number, because the mean of its divisors is an integer number (17778376).

Almost surely, 2^270771991 is an apocalyptic number.

270771991 is a deficient number, since it is larger than the sum of its proper divisors (49238777).

270771991 is an equidigital number, since it uses as much as digits as its factorization.

270771991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379 (or 1305 counting only the distinct ones).

The product of its (nonzero) digits is 55566, while the sum is 43.

The square root of 270771991 is about 16455.1508956922. The cubic root of 270771991 is about 646.9458223966.

The spelling of 270771991 in words is "two hundred seventy million, seven hundred seventy-one thousand, nine hundred ninety-one".