646132 has 12 divisors (see below), whose sum is σ = 1138816. Its totient is φ = 320760.

The previous prime is 646103. The next prime is 646147. The reversal of 646132 is 231646.

It is a super-2 number, since 2×646132² = 834973122848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

646132 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157 + ... + 1147.

2⁶⁴⁶¹³² is an apocalyptic number.

It is an amenable number.

646132 is a deficient number, since it is larger than the sum of its proper divisors (492684).

646132 is a wasteful number, since it uses less digits than its factorization.

646132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158 (or 1156 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 646132 is about 803.8233636814. The cubic root of 646132 is about 86.4517422694.

Adding to 646132 its reverse (231646), we get a palindrome (877778).

The spelling of 646132 in words is "six hundred forty-six thousand, one hundred thirty-two".