11543623 has 16 divisors (see below), whose sum is σ = 14515200. Its totient is φ = 8935776.

The previous prime is 11543617. The next prime is 11543633. The reversal of 11543623 is 32634511.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11543623 is a prime.

It is a super-2 number, since 2×11543623² = 266510463932258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543603) 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, 2928 + ... + 5626.

It is an arithmetic number, because the mean of its divisors is an integer number (907200).

Almost surely, 2^11543623 is an apocalyptic number.

11543623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11543623 is a deficient number, since it is larger than the sum of its proper divisors (2971577).

11543623 is a wasteful number, since it uses less digits than its factorization.

11543623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2766.

The product of its digits is 2160, while the sum is 25.

The square root of 11543623 is about 3397.5907640562. The cubic root of 11543623 is about 226.0029171837.

The spelling of 11543623 in words is "eleven million, five hundred forty-three thousand, six hundred twenty-three".