666281132 has 48 divisors (see below), whose sum is σ = 1344900480. Its totient is φ = 285638400.

The previous prime is 666281129. The next prime is 666281137. The reversal of 666281132 is 231182666.

It is a junction number, because it is equal to n+sod(n) for n = 666281092 and 666281101.

It is not an unprimeable number, because it can be changed into a prime (666281137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199823 + ... + 203129.

It is an arithmetic number, because the mean of its divisors is an integer number (28018760).

Almost surely, 2^666281132 is an apocalyptic number.

It is an amenable number.

666281132 is an abundant number, since it is smaller than the sum of its proper divisors (678619348).

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

666281132 is a wasteful number, since it uses less digits than its factorization.

666281132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3582 (or 3580 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 666281132 is about 25812.4220483084. The cubic root of 666281132 is about 873.4120344876.

The spelling of 666281132 in words is "six hundred sixty-six million, two hundred eighty-one thousand, one hundred thirty-two".