272505645 has 12 divisors (see below), whose sum is σ = 472343196. Its totient is φ = 145336320.

The previous prime is 272505641. The next prime is 272505647. The reversal of 272505645 is 546505272.

272505645 is a `hidden beast` number, since 2 + 7 + 2 + 5 + 0 + 5 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 31573161 + 240932484 = 5619^2 + 15522^2 .

It is not a de Polignac number, because 272505645 - 2² = 272505641 is a prime.

It is a super-3 number, since 3×272505645³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272505641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3027796 + ... + 3027885.

It is an arithmetic number, because the mean of its divisors is an integer number (39361933).

Almost surely, 2^272505645 is an apocalyptic number.

It is an amenable number.

272505645 is a deficient number, since it is larger than the sum of its proper divisors (199837551).

272505645 is a wasteful number, since it uses less digits than its factorization.

272505645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6055692 (or 6055689 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 272505645 is about 16507.7450004536. The cubic root of 272505645 is about 648.3236052286.

The spelling of 272505645 in words is "two hundred seventy-two million, five hundred five thousand, six hundred forty-five".