11865723 has 16 divisors (see below), whose sum is σ = 16588800. Its totient is φ = 7529984.

The previous prime is 11865713. The next prime is 11865739. The reversal of 11865723 is 32756811.

It is a cyclic number.

It is not a de Polignac number, because 11865723 - 2⁵ = 11865691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11865713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26203 + ... + 26651.

It is an arithmetic number, because the mean of its divisors is an integer number (1036800).

Almost surely, 2^11865723 is an apocalyptic number.

11865723 is a deficient number, since it is larger than the sum of its proper divisors (4723077).

11865723 is a wasteful number, since it uses less digits than its factorization.

11865723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858.

The product of its digits is 10080, while the sum is 33.

The square root of 11865723 is about 3444.6658763950. The cubic root of 11865723 is about 228.0857056984.

Adding to 11865723 its sum of digits (33), we get a triangular number (11865756 = T₄₈₇₁).

The spelling of 11865723 in words is "eleven million, eight hundred sixty-five thousand, seven hundred twenty-three".