666111036 has 12 divisors (see below), whose sum is σ = 1554259112. Its totient is φ = 222037008.

The previous prime is 666111011. The next prime is 666111067. The reversal of 666111036 is 630111666.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 666110994 and 666111012.

It is a congruent number.

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, 27754615 + ... + 27754638.

Almost surely, 2^666111036 is an apocalyptic number.

It is an amenable number.

666111036 is an abundant number, since it is smaller than the sum of its proper divisors (888148076).

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

666111036 is a wasteful number, since it uses less digits than its factorization.

666111036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55509260 (or 55509258 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 666111036 is about 25809.1269902723. The cubic root of 666111036 is about 873.3377032329.

The spelling of 666111036 in words is "six hundred sixty-six million, one hundred eleven thousand, thirty-six".