13140635 has 4 divisors (see below), whose sum is σ = 15768768. Its totient is φ = 10512504.

The previous prime is 13140607. The next prime is 13140649. The reversal of 13140635 is 53604131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13140635 - 2¹⁰ = 13139611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13140635.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1314059 + ... + 1314068.

It is an arithmetic number, because the mean of its divisors is an integer number (3942192).

Almost surely, 2^13140635 is an apocalyptic number.

13140635 is a deficient number, since it is larger than the sum of its proper divisors (2628133).

13140635 is an equidigital number, since it uses as much as digits as its factorization.

13140635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628132.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 13140635 is about 3625.0013793101. The cubic root of 13140635 is about 235.9783267945.

Adding to 13140635 its reverse (53604131), we get a palindrome (66744766).

The spelling of 13140635 in words is "thirteen million, one hundred forty thousand, six hundred thirty-five".