649500 has 48 divisors (see below), whose sum is σ = 1895712. Its totient is φ = 172800.

The previous prime is 649499. The next prime is 649501. The reversal of 649500 is 5946.

649500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (649499) and next prime (649501).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1284 + ... + 1716.

It is an arithmetic number, because the mean of its divisors is an integer number (39494).

2⁶⁴⁹⁵⁰⁰ is an apocalyptic number.

649500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (947856).

649500 is an abundant number, since it is smaller than the sum of its proper divisors (1246212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649500 is a wasteful number, since it uses less digits than its factorization.

649500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 649500 is about 805.9156283384. The cubic root of 649500 is about 86.6016935773.

The spelling of 649500 in words is "six hundred forty-nine thousand, five hundred".