13691277 has 12 divisors (see below), whose sum is σ = 20458620. Its totient is φ = 8812608.

The previous prime is 13691269. The next prime is 13691281. The reversal of 13691277 is 77219631.

It is a happy number.

13691277 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11634921 + 2056356 = 3411^2 + 1434^2 .

It is not a de Polignac number, because 13691277 - 2³ = 13691269 is a prime.

It is a super-3 number, since 3×13691277³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13691207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25968 + ... + 26489.

It is an arithmetic number, because the mean of its divisors is an integer number (1704885).

Almost surely, 2^13691277 is an apocalyptic number.

It is an amenable number.

13691277 is a deficient number, since it is larger than the sum of its proper divisors (6767343).

13691277 is a wasteful number, since it uses less digits than its factorization.

13691277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52492 (or 52489 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 13691277 is about 3700.1725635435. The cubic root of 13691277 is about 239.2294558212.

The spelling of 13691277 in words is "thirteen million, six hundred ninety-one thousand, two hundred seventy-seven".