649308 has 24 divisors (see below), whose sum is σ = 1653120. Its totient is φ = 196720.

The previous prime is 649307. The next prime is 649321. The reversal of 649308 is 803946.

649308 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 2328 + ... + 2591.

It is an arithmetic number, because the mean of its divisors is an integer number (68880).

2⁶⁴⁹³⁰⁸ is an apocalyptic number.

It is an amenable number.

649308 is an abundant number, since it is smaller than the sum of its proper divisors (1003812).

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

649308 is a wasteful number, since it uses less digits than its factorization.

649308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4937 (or 4935 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 649308 is about 805.7965003647. The cubic root of 649308 is about 86.5931592361.

The spelling of 649308 in words is "six hundred forty-nine thousand, three hundred eight".