649383 has 24 divisors (see below), whose sum is σ = 1060992. Its totient is φ = 345984.

The previous prime is 649381. The next prime is 649403. The reversal of 649383 is 383946.

It is not a de Polignac number, because 649383 - 2¹ = 649381 is a prime.

649383 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6016 + ... + 6122.

It is an arithmetic number, because the mean of its divisors is an integer number (44208).

2⁶⁴⁹³⁸³ is an apocalyptic number.

649383 is a deficient number, since it is larger than the sum of its proper divisors (411609).

649383 is a wasteful number, since it uses less digits than its factorization.

649383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 134 counting only the distinct ones).

The product of its digits is 15552, while the sum is 33.

The square root of 649383 is about 805.8430368254. The cubic root of 649383 is about 86.5964931634.

The spelling of 649383 in words is "six hundred forty-nine thousand, three hundred eighty-three".