649133 has 4 divisors (see below), whose sum is σ = 650748. Its totient is φ = 647520.

The previous prime is 649123. The next prime is 649141. The reversal of 649133 is 331946.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 13924 + 635209 = 118^2 + 797^2 .

It is a cyclic number.

It is not a de Polignac number, because 649133 - 2⁶ = 649069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 649133.

It is not an unprimeable number, because it can be changed into a prime (649123) by changing a digit.

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, 335 + ... + 1187.

It is an arithmetic number, because the mean of its divisors is an integer number (162687).

2⁶⁴⁹¹³³ is an apocalyptic number.

It is an amenable number.

649133 is a deficient number, since it is larger than the sum of its proper divisors (1615).

649133 is an equidigital number, since it uses as much as digits as its factorization.

649133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614.

The product of its digits is 1944, while the sum is 26.

The square root of 649133 is about 805.6879048366. The cubic root of 649133 is about 86.5853790740.

The spelling of 649133 in words is "six hundred forty-nine thousand, one hundred thirty-three".