11687923 has 8 divisors (see below), whose sum is σ = 12649616. Its totient is φ = 10735200.

The previous prime is 11687917. The next prime is 11687939. The reversal of 11687923 is 32978611.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11687923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11687903) 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, 613 + ... + 4873.

It is an arithmetic number, because the mean of its divisors is an integer number (1581202).

Almost surely, 2^11687923 is an apocalyptic number.

11687923 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11687923 is a deficient number, since it is larger than the sum of its proper divisors (961693).

11687923 is a wasteful number, since it uses less digits than its factorization.

11687923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4485.

The product of its digits is 18144, while the sum is 37.

The square root of 11687923 is about 3418.7604478817. The cubic root of 11687923 is about 226.9407298666.

The spelling of 11687923 in words is "eleven million, six hundred eighty-seven thousand, nine hundred twenty-three".