271072661 has 2 divisors, whose sum is σ = 271072662. Its totient is φ = 271072660.

The previous prime is 271072603. The next prime is 271072673. The reversal of 271072661 is 166270172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148084561 + 122988100 = 12169^2 + 11090^2 .

It is a cyclic number.

It is not a de Polignac number, because 271072661 - 2²² = 266878357 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (271072691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135536330 + 135536331.

It is an arithmetic number, because the mean of its divisors is an integer number (135536331).

Almost surely, 2^271072661 is an apocalyptic number.

It is an amenable number.

271072661 is a deficient number, since it is larger than the sum of its proper divisors (1).

271072661 is an equidigital number, since it uses as much as digits as its factorization.

271072661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 271072661 is about 16464.2844059497. The cubic root of 271072661 is about 647.1851938393.

The spelling of 271072661 in words is "two hundred seventy-one million, seventy-two thousand, six hundred sixty-one".