11968623 has 6 divisors (see below), whose sum is σ = 17288024. Its totient is φ = 7979076.

The previous prime is 11968603. The next prime is 11968637. The reversal of 11968623 is 32686911.

It is not a de Polignac number, because 11968623 - 2⁵ = 11968591 is a prime.

It is a super-2 number, since 2×11968623² = 286495873032258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11968603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 664915 + ... + 664932.

Almost surely, 2^11968623 is an apocalyptic number.

11968623 is a deficient number, since it is larger than the sum of its proper divisors (5319401).

11968623 is a wasteful number, since it uses less digits than its factorization.

11968623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329853 (or 1329850 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 11968623 is about 3459.5697709397. The cubic root of 11968623 is about 228.7431315684.

The spelling of 11968623 in words is "eleven million, nine hundred sixty-eight thousand, six hundred twenty-three".