666193052 has 24 divisors (see below), whose sum is σ = 1332940896. Its totient is φ = 285392448.

The previous prime is 666193039. The next prime is 666193081. The reversal of 666193052 is 250391666.

It is a junction number, because it is equal to n+sod(n) for n = 666192997 and 666193015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111698 + ... + 117510.

It is an arithmetic number, because the mean of its divisors is an integer number (55539204).

Almost surely, 2^666193052 is an apocalyptic number.

It is an amenable number.

666193052 is an abundant number, since it is smaller than the sum of its proper divisors (666747844).

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

666193052 is a wasteful number, since it uses less digits than its factorization.

666193052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9917 (or 9915 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 666193052 is about 25810.7158366443. The cubic root of 666193052 is about 873.3735454683.

The spelling of 666193052 in words is "six hundred sixty-six million, one hundred ninety-three thousand, fifty-two".