13670261 has 16 divisors (see below), whose sum is σ = 16184448. Its totient is φ = 11404800.

The previous prime is 13670221. The next prime is 13670297. The reversal of 13670261 is 16207631.

It is not a de Polignac number, because 13670261 - 2¹⁴ = 13653877 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 13670261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13670221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6776 + ... + 8558.

It is an arithmetic number, because the mean of its divisors is an integer number (1011528).

Almost surely, 2^13670261 is an apocalyptic number.

13670261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13670261 is a deficient number, since it is larger than the sum of its proper divisors (2514187).

13670261 is a wasteful number, since it uses less digits than its factorization.

13670261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 13670261 is about 3697.3316053608. The cubic root of 13670261 is about 239.1069880410.

Adding to 13670261 its reverse (16207631), we get a palindrome (29877892).

It can be divided in two parts, 13670 and 261, that added together give a palindrome (13931).

The spelling of 13670261 in words is "thirteen million, six hundred seventy thousand, two hundred sixty-one".