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666132 = 22355511
BaseRepresentation
bin10100010101000010100
31020211202120
42202220110
5132304012
622135540
75443035
oct2425024
91224676
10666132
11415525
122815b0
131a427c
14134a8c
15d258c
hexa2a14

666132 has 12 divisors (see below), whose sum is σ = 1554336. Its totient is φ = 222040.

The previous prime is 666119. The next prime is 666139. The reversal of 666132 is 231666.

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

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27744 + ... + 27767.

It is an arithmetic number, because the mean of its divisors is an integer number (129528).

2666132 is an apocalyptic number.

It is an amenable number.

666132 is an abundant number, since it is smaller than the sum of its proper divisors (888204).

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

666132 is a wasteful number, since it uses less digits than its factorization.

666132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55518 (or 55516 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

The square root of 666132 is about 816.1691001257. The cubic root of 666132 is about 87.3346865099.

Adding to 666132 its reverse (231666), we get a palindrome (897798).

The spelling of 666132 in words is "six hundred sixty-six thousand, one hundred thirty-two".

Divisors: 1 2 3 4 6 12 55511 111022 166533 222044 333066 666132