12081677 has 4 divisors (see below), whose sum is σ = 12088860. Its totient is φ = 12074496.

The previous prime is 12081673. The next prime is 12081683. The reversal of 12081677 is 77618021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6832996 + 5248681 = 2614^2 + 2291^2 .

It is a cyclic number.

It is not a de Polignac number, because 12081677 - 2² = 12081673 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12081673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443 + ... + 4935.

It is an arithmetic number, because the mean of its divisors is an integer number (3022215).

Almost surely, 2^12081677 is an apocalyptic number.

It is an amenable number.

12081677 is a deficient number, since it is larger than the sum of its proper divisors (7183).

12081677 is an equidigital number, since it uses as much as digits as its factorization.

12081677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7182.

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

The square root of 12081677 is about 3475.8706822895. The cubic root of 12081677 is about 229.4611012750.

Adding to 12081677 its reverse (77618021), we get a palindrome (89699698).

The spelling of 12081677 in words is "twelve million, eighty-one thousand, six hundred seventy-seven".