13691073 has 16 divisors (see below), whose sum is σ = 20454336. Its totient is φ = 8072640.

The previous prime is 13691033. The next prime is 13691107. The reversal of 13691073 is 37019631.

It is not a de Polignac number, because 13691073 - 2¹⁶ = 13625537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13691073.

It is not an unprimeable number, because it can be changed into a prime (13691033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4386 + ... + 6827.

It is an arithmetic number, because the mean of its divisors is an integer number (1278396).

Almost surely, 2^13691073 is an apocalyptic number.

It is an amenable number.

13691073 is a deficient number, since it is larger than the sum of its proper divisors (6763263).

13691073 is a wasteful number, since it uses less digits than its factorization.

13691073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11264.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 13691073 is about 3700.1449971589. The cubic root of 13691073 is about 239.2282676425.

It can be divided in two parts, 1369 and 1073, that added together give a palindrome (2442).

The spelling of 13691073 in words is "thirteen million, six hundred ninety-one thousand, seventy-three".