12066778 has 8 divisors (see below), whose sum is σ = 18243072. Its totient is φ = 5985756.

The previous prime is 12066749. The next prime is 12066797. The reversal of 12066778 is 87766021.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23500 + ... + 24007.

It is an arithmetic number, because the mean of its divisors is an integer number (2280384).

Almost surely, 2^12066778 is an apocalyptic number.

12066778 is a deficient number, since it is larger than the sum of its proper divisors (6176294).

12066778 is a wasteful number, since it uses less digits than its factorization.

12066778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47636.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 12066778 is about 3473.7268171231. The cubic root of 12066778 is about 229.3667394511.

The spelling of 12066778 in words is "twelve million, sixty-six thousand, seven hundred seventy-eight".