649305 has 24 divisors (see below), whose sum is σ = 1153152. Its totient is φ = 337824.

The previous prime is 649291. The next prime is 649307. The reversal of 649305 is 503946.

It is a happy number.

649305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 649305 - 2⁵ = 649273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (649307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1962 + ... + 2268.

It is an arithmetic number, because the mean of its divisors is an integer number (48048).

2⁶⁴⁹³⁰⁵ is an apocalyptic number.

It is an amenable number.

649305 is a deficient number, since it is larger than the sum of its proper divisors (503847).

649305 is a wasteful number, since it uses less digits than its factorization.

649305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 649305 is about 805.7946388504. The cubic root of 649305 is about 86.5930258737.

The spelling of 649305 in words is "six hundred forty-nine thousand, three hundred five".