13643201 has 24 divisors (see below), whose sum is σ = 16601760. Its totient is φ = 11107200.

The previous prime is 13643191. The next prime is 13643213. The reversal of 13643201 is 10234631.

It is not a de Polignac number, because 13643201 - 2²² = 9448897 is a prime.

It is a super-2 number, since 2×13643201² = 372273867052802, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13643261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76130 + ... + 76308.

It is an arithmetic number, because the mean of its divisors is an integer number (691740).

Almost surely, 2^13643201 is an apocalyptic number.

13643201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13643201 is a deficient number, since it is larger than the sum of its proper divisors (2958559).

13643201 is a wasteful number, since it uses less digits than its factorization.

13643201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 13643201 is about 3693.6703967734. The cubic root of 13643201 is about 238.9491147073.

Adding to 13643201 its reverse (10234631), we get a palindrome (23877832).

The spelling of 13643201 in words is "thirteen million, six hundred forty-three thousand, two hundred one".