13640035 has 16 divisors (see below), whose sum is σ = 18086976. Its totient is φ = 9822208.

The previous prime is 13640017. The next prime is 13640041. The reversal of 13640035 is 53004631.

It is a cyclic number.

It is not a de Polignac number, because 13640035 - 2⁹ = 13639523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13639988 and 13640015.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1534 + ... + 5443.

It is an arithmetic number, because the mean of its divisors is an integer number (1130436).

Almost surely, 2^13640035 is an apocalyptic number.

13640035 is a deficient number, since it is larger than the sum of its proper divisors (4446941).

13640035 is a wasteful number, since it uses less digits than its factorization.

13640035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7022.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 13640035 is about 3693.2418009115. The cubic root of 13640035 is about 238.9306300076.

Adding to 13640035 its reverse (53004631), we get a palindrome (66644666).

The spelling of 13640035 in words is "thirteen million, six hundred forty thousand, thirty-five".