649508 has 12 divisors (see below), whose sum is σ = 1153152. Its totient is φ = 320040.

The previous prime is 649507. The next prime is 649511. The reversal of 649508 is 805946.

It is a zygodrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (649501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860 + ... + 1427.

It is an arithmetic number, because the mean of its divisors is an integer number (96096).

2⁶⁴⁹⁵⁰⁸ is an apocalyptic number.

It is an amenable number.

649508 is a deficient number, since it is larger than the sum of its proper divisors (503644).

649508 is a wasteful number, since it uses less digits than its factorization.

649508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2362 (or 2360 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 649508 is about 805.9205916218. The cubic root of 649508 is about 86.6020491384.

The spelling of 649508 in words is "six hundred forty-nine thousand, five hundred eight".