12005677 has 4 divisors (see below), whose sum is σ = 12036316. Its totient is φ = 11975040.

The previous prime is 12005659. The next prime is 12005683. The reversal of 12005677 is 77650021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4748041 + 7257636 = 2179^2 + 2694^2 .

It is a cyclic number.

It is not a de Polignac number, because 12005677 - 2¹⁹ = 11481389 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 (12005627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14724 + ... + 15517.

It is an arithmetic number, because the mean of its divisors is an integer number (3009079).

Almost surely, 2^12005677 is an apocalyptic number.

It is an amenable number.

12005677 is a deficient number, since it is larger than the sum of its proper divisors (30639).

12005677 is an equidigital number, since it uses as much as digits as its factorization.

12005677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30638.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 12005677 is about 3464.9209226186. The cubic root of 12005677 is about 228.9789458342.

Adding to 12005677 its reverse (77650021), we get a palindrome (89655698).

The spelling of 12005677 in words is "twelve million, five thousand, six hundred seventy-seven".