13140647 has 8 divisors (see below), whose sum is σ = 14896560. Its totient is φ = 11491200.

The previous prime is 13140607. The next prime is 13140649. The reversal of 13140647 is 74604131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13140647 - 2¹⁴ = 13124263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13140649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26354 + ... + 26847.

It is an arithmetic number, because the mean of its divisors is an integer number (1862070).

Almost surely, 2^13140647 is an apocalyptic number.

13140647 is a deficient number, since it is larger than the sum of its proper divisors (1755913).

13140647 is a wasteful number, since it uses less digits than its factorization.

13140647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53233.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 13140647 is about 3625.0030344815. The cubic root of 13140647 is about 235.9783986261.

Adding to 13140647 its reverse (74604131), we get a palindrome (87744778).

The spelling of 13140647 in words is "thirteen million, one hundred forty thousand, six hundred forty-seven".