270111661 has 2 divisors, whose sum is σ = 270111662. Its totient is φ = 270111660.

The previous prime is 270111641. The next prime is 270111671. The reversal of 270111661 is 166111072.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241958025 + 28153636 = 15555^2 + 5306^2 .

It is a cyclic number.

It is not a de Polignac number, because 270111661 - 2⁷ = 270111533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (270111641) 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 as a sum of consecutive naturals, namely, 135055830 + 135055831.

It is an arithmetic number, because the mean of its divisors is an integer number (135055831).

Almost surely, 2^270111661 is an apocalyptic number.

It is an amenable number.

270111661 is a deficient number, since it is larger than the sum of its proper divisors (1).

270111661 is an equidigital number, since it uses as much as digits as its factorization.

270111661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 270111661 is about 16435.0741099637. The cubic root of 270111661 is about 646.4194933713.

The spelling of 270111661 in words is "two hundred seventy million, one hundred eleven thousand, six hundred sixty-one".