13691867 has 8 divisors (see below), whose sum is σ = 15691776. Its totient is φ = 11702952.

The previous prime is 13691819. The next prime is 13691869. The reversal of 13691867 is 76819631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13691867 - 2⁶ = 13691803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13691869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128 + ... + 5234.

It is an arithmetic number, because the mean of its divisors is an integer number (1961472).

Almost surely, 2^13691867 is an apocalyptic number.

13691867 is a deficient number, since it is larger than the sum of its proper divisors (1999909).

13691867 is an equidigital number, since it uses as much as digits as its factorization.

13691867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5497.

The product of its digits is 54432, while the sum is 41.

The square root of 13691867 is about 3700.2522886960. The cubic root of 13691867 is about 239.2328921540.

The spelling of 13691867 in words is "thirteen million, six hundred ninety-one thousand, eight hundred sixty-seven".