11865633 has 32 divisors (see below), whose sum is σ = 18278400. Its totient is φ = 6785856.

The previous prime is 11865629. The next prime is 11865649. The reversal of 11865633 is 33656811.

It is not a de Polignac number, because 11865633 - 2² = 11865629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11865594 and 11865603.

It is not an unprimeable number, because it can be changed into a prime (11865613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49528 + ... + 49766.

It is an arithmetic number, because the mean of its divisors is an integer number (571200).

Almost surely, 2^11865633 is an apocalyptic number.

11865633 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11865633 is a deficient number, since it is larger than the sum of its proper divisors (6412767).

11865633 is a wasteful number, since it uses less digits than its factorization.

11865633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341.

The product of its digits is 12960, while the sum is 33.

The square root of 11865633 is about 3444.6528126939. The cubic root of 11865633 is about 228.0851290299.

The spelling of 11865633 in words is "eleven million, eight hundred sixty-five thousand, six hundred thirty-three".