11877885 has 12 divisors (see below), whose sum is σ = 20588412. Its totient is φ = 6334848.

The previous prime is 11877871. The next prime is 11877889. The reversal of 11877885 is 58877811.

It can be written as a sum of positive squares in 2 ways, for example, as 8964036 + 2913849 = 2994^2 + 1707^2 .

It is not a de Polignac number, because 11877885 - 2¹⁰ = 11876861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 263953 = 11877885 / (1 + 1 + 8 + 7 + 7 + 8 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 11877885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11877889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131932 + ... + 132021.

It is an arithmetic number, because the mean of its divisors is an integer number (1715701).

Almost surely, 2^11877885 is an apocalyptic number.

11877885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11877885 is a deficient number, since it is larger than the sum of its proper divisors (8710527).

11877885 is a wasteful number, since it uses less digits than its factorization.

11877885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263964 (or 263961 counting only the distinct ones).

The product of its digits is 125440, while the sum is 45.

The square root of 11877885 is about 3446.4307623975. The cubic root of 11877885 is about 228.1636060265.

The spelling of 11877885 in words is "eleven million, eight hundred seventy-seven thousand, eight hundred eighty-five".