271660666 has 4 divisors (see below), whose sum is σ = 407491002. Its totient is φ = 135830332.

The previous prime is 271660643. The next prime is 271660687. The reversal of 271660666 is 666066172.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 154480041 + 117180625 = 12429^2 + 10825^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 67915165 + ... + 67915168.

Almost surely, 2^271660666 is an apocalyptic number.

271660666 is a deficient number, since it is larger than the sum of its proper divisors (135830336).

271660666 is a wasteful number, since it uses less digits than its factorization.

271660666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135830335.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 271660666 is about 16482.1317189252. The cubic root of 271660666 is about 647.6528093004.

The spelling of 271660666 in words is "two hundred seventy-one million, six hundred sixty thousand, six hundred sixty-six".