11621871 has 12 divisors (see below), whose sum is σ = 16816800. Its totient is φ = 7734240.

The previous prime is 11621843. The next prime is 11621873. The reversal of 11621871 is 17812611.

11621871 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11621871 - 2⁵ = 11621839 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621873) 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, 8826 + ... + 10056.

It is an arithmetic number, because the mean of its divisors is an integer number (1401400).

Almost surely, 2^11621871 is an apocalyptic number.

11621871 is a deficient number, since it is larger than the sum of its proper divisors (5194929).

11621871 is a wasteful number, since it uses less digits than its factorization.

11621871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286 (or 2283 counting only the distinct ones).

The product of its digits is 672, while the sum is 27.

The square root of 11621871 is about 3409.0865345426. The cubic root of 11621871 is about 226.5124183651.

The spelling of 11621871 in words is "eleven million, six hundred twenty-one thousand, eight hundred seventy-one".