649233 has 24 divisors (see below), whose sum is σ = 1048320. Its totient is φ = 384480.

The previous prime is 649217. The next prime is 649261. The reversal of 649233 is 332946.

It is not a de Polignac number, because 649233 - 2⁴ = 649217 is a prime.

It is a d-powerful number, because it can be written as 6² + 4⁸ + 2¹⁹ + 9² + 3⁵ + 3¹⁰ .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 649197 and 649206.

It is not an unprimeable number, because it can be changed into a prime (649273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3538 + ... + 3716.

It is an arithmetic number, because the mean of its divisors is an integer number (43680).

2⁶⁴⁹²³³ is an apocalyptic number.

It is an amenable number.

649233 is a deficient number, since it is larger than the sum of its proper divisors (399087).

649233 is a wasteful number, since it uses less digits than its factorization.

649233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 226 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 649233 is about 805.7499612163. The cubic root of 649233 is about 86.5898250521.

The spelling of 649233 in words is "six hundred forty-nine thousand, two hundred thirty-three".