12087761 has 6 divisors (see below), whose sum is σ = 14061330. Its totient is φ = 10360896.

The previous prime is 12087749. The next prime is 12087767. The reversal of 12087761 is 16778021.

12087761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7529536 + 4558225 = 2744^2 + 2135^2 .

It is not a de Polignac number, because 12087761 - 2¹⁸ = 11825617 is a prime.

It is a super-2 number, since 2×12087761² = 292227931986242, 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 (12087767) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123296 + ... + 123393.

It is an arithmetic number, because the mean of its divisors is an integer number (2343555).

Almost surely, 2^12087761 is an apocalyptic number.

It is an amenable number.

12087761 is a deficient number, since it is larger than the sum of its proper divisors (1973569).

12087761 is an equidigital number, since it uses as much as digits as its factorization.

12087761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246703 (or 246696 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 12087761 is about 3476.7457485413. The cubic root of 12087761 is about 229.4996115764.

The spelling of 12087761 in words is "twelve million, eighty-seven thousand, seven hundred sixty-one".