13691000 has 32 divisors (see below), whose sum is σ = 32039280. Its totient is φ = 5476000.

The previous prime is 13690997. The next prime is 13691033. The reversal of 13691000 is 19631.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5846 + ... + 7845.

Almost surely, 2^13691000 is an apocalyptic number.

13691000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13691000 is an abundant number, since it is smaller than the sum of its proper divisors (18348280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13691000 is a wasteful number, since it uses less digits than its factorization.

13691000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13712 (or 13698 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 13691000 is about 3700.1351326675. The cubic root of 13691000 is about 239.2278424580.

The spelling of 13691000 in words is "thirteen million, six hundred ninety-one thousand".