11861723 has 4 divisors (see below), whose sum is σ = 11966808. Its totient is φ = 11756640.

The previous prime is 11861713. The next prime is 11861749. The reversal of 11861723 is 32716811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11861723 - 2⁶ = 11861659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11861713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52373 + ... + 52598.

It is an arithmetic number, because the mean of its divisors is an integer number (2991702).

Almost surely, 2^11861723 is an apocalyptic number.

11861723 is a deficient number, since it is larger than the sum of its proper divisors (105085).

11861723 is a wasteful number, since it uses less digits than its factorization.

11861723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105084.

The product of its digits is 2016, while the sum is 29.

The square root of 11861723 is about 3444.0852196193. The cubic root of 11861723 is about 228.0600731723.

The spelling of 11861723 in words is "eleven million, eight hundred sixty-one thousand, seven hundred twenty-three".