272628666 has 20 divisors (see below), whose sum is σ = 610890522. Its totient is φ = 90876168.

The previous prime is 272628611. The next prime is 272628709. The reversal of 272628666 is 666826272.

It can be written as a sum of positive squares in only one way, i.e., 271557441 + 1071225 = 16479^2 + 1035^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 841285 + ... + 841608.

Almost surely, 2^272628666 is an apocalyptic number.

272628666 is an abundant number, since it is smaller than the sum of its proper divisors (338261856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

272628666 is a wasteful number, since it uses less digits than its factorization.

272628666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682907 (or 1682898 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 272628666 is about 16511.4707400643. The cubic root of 272628666 is about 648.4211511214.

The spelling of 272628666 in words is "two hundred seventy-two million, six hundred twenty-eight thousand, six hundred sixty-six".