272786561 has 4 divisors (see below), whose sum is σ = 275289300. Its totient is φ = 270283824.

The previous prime is 272786551. The next prime is 272786593. The reversal of 272786561 is 165687272.

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

It can be written as a sum of positive squares in 2 ways, for example, as 64705936 + 208080625 = 8044^2 + 14425^2 .

It is a cyclic number.

It is not a de Polignac number, because 272786561 - 2¹⁰ = 272785537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (272786551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1251206 + ... + 1251423.

It is an arithmetic number, because the mean of its divisors is an integer number (68822325).

Almost surely, 2^272786561 is an apocalyptic number.

It is an amenable number.

272786561 is a deficient number, since it is larger than the sum of its proper divisors (2502739).

272786561 is a wasteful number, since it uses less digits than its factorization.

272786561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502738.

The product of its digits is 282240, while the sum is 44.

The square root of 272786561 is about 16516.2514209490. The cubic root of 272786561 is about 648.5463063374.

The spelling of 272786561 in words is "two hundred seventy-two million, seven hundred eighty-six thousand, five hundred sixty-one".