12077845 has 8 divisors (see below), whose sum is σ = 15608376. Its totient is φ = 8918976.

The previous prime is 12077809. The next prime is 12077861. The reversal of 12077845 is 54877021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 401956 + 11675889 = 634^2 + 3417^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12077845 - 2⁹ = 12077333 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12077845.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 92842 + ... + 92971.

It is an arithmetic number, because the mean of its divisors is an integer number (1951047).

Almost surely, 2^12077845 is an apocalyptic number.

It is an amenable number.

12077845 is a deficient number, since it is larger than the sum of its proper divisors (3530531).

12077845 is a wasteful number, since it uses less digits than its factorization.

12077845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185831.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 12077845 is about 3475.3194097809. The cubic root of 12077845 is about 229.4368389721.

The spelling of 12077845 in words is "twelve million, seventy-seven thousand, eight hundred forty-five".