646133 has 8 divisors (see below), whose sum is σ = 702720. Its totient is φ = 591840.

The previous prime is 646103. The next prime is 646147. The reversal of 646133 is 331646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 646133 - 2⁸ = 645877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 646099 and 646108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41 + ... + 1137.

It is an arithmetic number, because the mean of its divisors is an integer number (87840).

2⁶⁴⁶¹³³ is an apocalyptic number.

It is an amenable number.

646133 is a deficient number, since it is larger than the sum of its proper divisors (56587).

646133 is a wasteful number, since it uses less digits than its factorization.

646133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147.

The product of its digits is 1296, while the sum is 23.

The square root of 646133 is about 803.8239857083. The cubic root of 646133 is about 86.4517868690.

Adding to 646133 its reverse (331646), we get a palindrome (977779).

The spelling of 646133 in words is "six hundred forty-six thousand, one hundred thirty-three".