271240645 has 16 divisors (see below), whose sum is σ = 352567152. Its totient is φ = 199134720.

The previous prime is 271240621. The next prime is 271240657. The reversal of 271240645 is 546042172.

It can be written as a sum of positive squares in 8 ways, for example, as 5094049 + 266146596 = 2257^2 + 16314^2 .

It is not a de Polignac number, because 271240645 - 2¹⁵ = 271207877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 816 + ... + 23305.

It is an arithmetic number, because the mean of its divisors is an integer number (22035447).

Almost surely, 2^271240645 is an apocalyptic number.

It is an amenable number.

271240645 is a deficient number, since it is larger than the sum of its proper divisors (81326507).

271240645 is a wasteful number, since it uses less digits than its factorization.

271240645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24312.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 271240645 is about 16469.3850826313. The cubic root of 271240645 is about 647.3188533381.

The spelling of 271240645 in words is "two hundred seventy-one million, two hundred forty thousand, six hundred forty-five".