11995623 has 6 divisors (see below), whose sum is σ = 17327024. Its totient is φ = 7997076.

The previous prime is 11995619. The next prime is 11995639. The reversal of 11995623 is 32659911.

11995623 is a `hidden beast` number, since 1 + 1 + 99 + 562 + 3 = 666.

11995623 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 11995623 - 2² = 11995619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11990623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 666415 + ... + 666432.

Almost surely, 2^11995623 is an apocalyptic number.

11995623 is a deficient number, since it is larger than the sum of its proper divisors (5331401).

11995623 is a wasteful number, since it uses less digits than its factorization.

11995623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332853 (or 1332850 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 11995623 is about 3463.4697919861. The cubic root of 11995623 is about 228.9150094910.

The spelling of 11995623 in words is "eleven million, nine hundred ninety-five thousand, six hundred twenty-three".