666160506 has 48 divisors (see below), whose sum is σ = 1617134688. Its totient is φ = 196408800.

The previous prime is 666160483. The next prime is 666160511. The reversal of 666160506 is 605061666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38140 + ... + 52791.

It is an arithmetic number, because the mean of its divisors is an integer number (33690306).

Almost surely, 2^666160506 is an apocalyptic number.

666160506 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

666160506 is an abundant number, since it is smaller than the sum of its proper divisors (950974182).

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

666160506 is a wasteful number, since it uses less digits than its factorization.

666160506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90987 (or 90984 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 666160506 is about 25810.0853543726. The cubic root of 666160506 is about 873.3593227249.

It can be divided in two parts, 666160 and 506, that added together give a palindrome (666666).

The spelling of 666160506 in words is "six hundred sixty-six million, one hundred sixty thousand, five hundred six".