13640341 has 32 divisors (see below), whose sum is σ = 17611776. Its totient is φ = 10368000.

The previous prime is 13640339. The next prime is 13640351. The reversal of 13640341 is 14304631.

It is a 5-Lehmer number, since φ(13640341) divides (13640341-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 13640341 - 2¹ = 13640339 is a prime.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13640321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75271 + ... + 75451.

It is an arithmetic number, because the mean of its divisors is an integer number (550368).

Almost surely, 2^13640341 is an apocalyptic number.

13640341 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13640341 is a deficient number, since it is larger than the sum of its proper divisors (3971435).

13640341 is a wasteful number, since it uses less digits than its factorization.

13640341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 13640341 is about 3693.2832276986. The cubic root of 13640341 is about 238.9324167143.

Adding to 13640341 its reverse (14304631), we get a palindrome (27944972).

The spelling of 13640341 in words is "thirteen million, six hundred forty thousand, three hundred forty-one".