13700261 has 4 divisors (see below), whose sum is σ = 13721292. Its totient is φ = 13679232.

The previous prime is 13700251. The next prime is 13700263. The reversal of 13700261 is 16200731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16200731 = 1427 ⋅11353.

It can be written as a sum of positive squares in 2 ways, for example, as 6220036 + 7480225 = 2494^2 + 2735^2 .

It is a cyclic number.

It is not a de Polignac number, because 13700261 - 2¹⁴ = 13683877 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 (13700263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9506 + ... + 10851.

It is an arithmetic number, because the mean of its divisors is an integer number (3430323).

Almost surely, 2^13700261 is an apocalyptic number.

It is an amenable number.

13700261 is a deficient number, since it is larger than the sum of its proper divisors (21031).

13700261 is an equidigital number, since it uses as much as digits as its factorization.

13700261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21030.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 13700261 is about 3701.3863618920. The cubic root of 13700261 is about 239.2817705786.

Adding to 13700261 its reverse (16200731), we get a palindrome (29900992).

The spelling of 13700261 in words is "thirteen million, seven hundred thousand, two hundred sixty-one".