273315645 has 24 divisors (see below), whose sum is σ = 475610616. Its totient is φ = 145195008.

The previous prime is 273315643. The next prime is 273315659. The reversal of 273315645 is 546513372.

273315645 is a `hidden beast` number, since 2 + 7 + 3 + 3 + 1 + 5 + 645 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 166255236 + 107060409 = 12894^2 + 10347^2 .

It is not a de Polignac number, because 273315645 - 2¹ = 273315643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273315643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 252 + ... + 23381.

It is an arithmetic number, because the mean of its divisors is an integer number (19817109).

Almost surely, 2^273315645 is an apocalyptic number.

It is an amenable number.

273315645 is a deficient number, since it is larger than the sum of its proper divisors (202294971).

273315645 is a wasteful number, since it uses less digits than its factorization.

273315645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23901 (or 23898 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 273315645 is about 16532.2607346969. The cubic root of 273315645 is about 648.9653321969.

The spelling of 273315645 in words is "two hundred seventy-three million, three hundred fifteen thousand, six hundred forty-five".