272661 has 4 divisors (see below), whose sum is σ = 363552. Its totient is φ = 181772.

The previous prime is 272659. The next prime is 272683. The reversal of 272661 is 166272.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 272661 - 2¹ = 272659 is a prime.

It is a D-number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 272661.

It is not an unprimeable number, because it can be changed into a prime (272621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45441 + ... + 45446.

It is an arithmetic number, because the mean of its divisors is an integer number (90888).

2²⁷²⁶⁶¹ is an apocalyptic number.

It is an amenable number.

272661 is a deficient number, since it is larger than the sum of its proper divisors (90891).

272661 is an equidigital number, since it uses as much as digits as its factorization.

272661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90890.

The product of its digits is 1008, while the sum is 24.

The square root of 272661 is about 522.1695127064. The cubic root of 272661 is about 64.8446784548.

The spelling of 272661 in words is "two hundred seventy-two thousand, six hundred sixty-one".