12078663 has 4 divisors (see below), whose sum is σ = 16104888. Its totient is φ = 8052440.

The previous prime is 12078659. The next prime is 12078667. The reversal of 12078663 is 36687021.

12078663 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (12078659) and next prime (12078667).

It is a cyclic number.

It is not a de Polignac number, because 12078663 - 2² = 12078659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12078667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2013108 + ... + 2013113.

It is an arithmetic number, because the mean of its divisors is an integer number (4026222).

Almost surely, 2^12078663 is an apocalyptic number.

12078663 is a deficient number, since it is larger than the sum of its proper divisors (4026225).

12078663 is an equidigital number, since it uses as much as digits as its factorization.

12078663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4026224.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 12078663 is about 3475.4370948127. The cubic root of 12078663 is about 229.4420185688.

It can be divided in two parts, 1207 and 8663, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 12078663 in words is "twelve million, seventy-eight thousand, six hundred sixty-three".