649733 has 8 divisors (see below), whose sum is σ = 750720. Its totient is φ = 550800.

The previous prime is 649717. The next prime is 649739. The reversal of 649733 is 337946.

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 649733 - 2⁴ = 649717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 649733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649739) 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, 248 + ... + 1166.

It is an arithmetic number, because the mean of its divisors is an integer number (93840).

2⁶⁴⁹⁷³³ is an apocalyptic number.

It is an amenable number.

649733 is a deficient number, since it is larger than the sum of its proper divisors (100987).

649733 is a wasteful number, since it uses less digits than its factorization.

649733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027.

The product of its digits is 13608, while the sum is 32.

The square root of 649733 is about 806.0601714512. The cubic root of 649733 is about 86.6120480973.

The spelling of 649733 in words is "six hundred forty-nine thousand, seven hundred thirty-three".