271640660 has 24 divisors (see below), whose sum is σ = 572094600. Its totient is φ = 108342144.

The previous prime is 271640659. The next prime is 271640669. The reversal of 271640660 is 66046172.

It can be written as a sum of positive squares in 4 ways, for example, as 12945604 + 258695056 = 3598^2 + 16084^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (271640669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12479 + ... + 26438.

It is an arithmetic number, because the mean of its divisors is an integer number (23837275).

Almost surely, 2^271640660 is an apocalyptic number.

271640660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

271640660 is an abundant number, since it is smaller than the sum of its proper divisors (300453940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

271640660 is a wasteful number, since it uses less digits than its factorization.

271640660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39275 (or 39273 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 271640660 is about 16481.5248080995. The cubic root of 271640660 is about 647.6369104705.

The spelling of 271640660 in words is "two hundred seventy-one million, six hundred forty thousand, six hundred sixty".