12078664 has 16 divisors (see below), whose sum is σ = 24389820. Its totient is φ = 5574720.

The previous prime is 12078659. The next prime is 12078667. The reversal of 12078664 is 46687021.

It can be written as a sum of positive squares in 2 ways, for example, as 10614564 + 1464100 = 3258^2 + 1210^2 .

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, 57967 + ... + 58174.

Almost surely, 2^12078664 is an apocalyptic number.

It is an amenable number.

12078664 is an abundant number, since it is smaller than the sum of its proper divisors (12311156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12078664 is a wasteful number, since it uses less digits than its factorization.

12078664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116160 (or 116156 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 12078664 is about 3475.4372386795. The cubic root of 12078664 is about 229.4420249006.

The spelling of 12078664 in words is "twelve million, seventy-eight thousand, six hundred sixty-four".