11982605 has 16 divisors (see below), whose sum is σ = 14774400. Its totient is φ = 9326400.

The previous prime is 11982601. The next prime is 11982617. The reversal of 11982605 is 50628911.

It is not a de Polignac number, because 11982605 - 2² = 11982601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11982601) 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, 44411 + ... + 44679.

It is an arithmetic number, because the mean of its divisors is an integer number (923400).

Almost surely, 2^11982605 is an apocalyptic number.

It is an amenable number.

11982605 is a deficient number, since it is larger than the sum of its proper divisors (2791795).

11982605 is a wasteful number, since it uses less digits than its factorization.

11982605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 11982605 is about 3461.5899526085. The cubic root of 11982605 is about 228.8321711022.

The spelling of 11982605 in words is "eleven million, nine hundred eighty-two thousand, six hundred five".