666102112 has 24 divisors (see below), whose sum is σ = 1412265456. Its totient is φ = 307431552.

The previous prime is 666102091. The next prime is 666102137. The reversal of 666102112 is 211201666.

It is a super-2 number, since 2×666102112² = 887384047221721088, which contains 22 as substring.

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, 800188 + ... + 801019.

It is an arithmetic number, because the mean of its divisors is an integer number (58844394).

Almost surely, 2^666102112 is an apocalyptic number.

It is an amenable number.

666102112 is an abundant number, since it is smaller than the sum of its proper divisors (746163344).

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

666102112 is a wasteful number, since it uses less digits than its factorization.

666102112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601230 (or 1601222 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 666102112 is about 25808.9541051163. The cubic root of 666102112 is about 873.3338031322. Note that the first 3 decimals are identical.

Adding to 666102112 its reverse (211201666), we get a palindrome (877303778).

The spelling of 666102112 in words is "six hundred sixty-six million, one hundred two thousand, one hundred twelve".