13640271 has 16 divisors (see below), whose sum is σ = 19463040. Its totient is φ = 8471520.

The previous prime is 13640267. The next prime is 13640287. The reversal of 13640271 is 17204631.

It is not a de Polignac number, because 13640271 - 2² = 13640267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13640201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1516 + ... + 5438.

It is an arithmetic number, because the mean of its divisors is an integer number (1216440).

Almost surely, 2^13640271 is an apocalyptic number.

13640271 is a deficient number, since it is larger than the sum of its proper divisors (5822769).

13640271 is a wasteful number, since it uses less digits than its factorization.

13640271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4006.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 13640271 is about 3693.2737510236. The cubic root of 13640271 is about 238.9320079929.

The spelling of 13640271 in words is "thirteen million, six hundred forty thousand, two hundred seventy-one".