649502 has 16 divisors (see below), whose sum is σ = 1179360. Its totient is φ = 261888.

The previous prime is 649501. The next prime is 649507. The reversal of 649502 is 205946.

It is a d-powerful number, because it can be written as 6⁶ + 4⁷ + 5⁵ + 9⁵ + 0 + 2¹⁹ .

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 649502.

It is not an unprimeable number, because it can be changed into a prime (649501) 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 7 ways as a sum of consecutive naturals, for example, 1127 + ... + 1602.

It is an arithmetic number, because the mean of its divisors is an integer number (73710).

2⁶⁴⁹⁵⁰² is an apocalyptic number.

649502 is a deficient number, since it is larger than the sum of its proper divisors (529858).

649502 is a wasteful number, since it uses less digits than its factorization.

649502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 649502 is about 805.9168691621. The cubic root of 649502 is about 86.6017824679.

Subtracting from 649502 its reverse (205946), we obtain a square (443556 = 666²).

The spelling of 649502 in words is "six hundred forty-nine thousand, five hundred two".