649922 has 16 divisors (see below), whose sum is σ = 1200192. Its totient is φ = 257040.

The previous prime is 649921. The next prime is 649937. The reversal of 649922 is 229946.

649922 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (649921) 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, 1604 + ... + 1967.

It is an arithmetic number, because the mean of its divisors is an integer number (75012).

2⁶⁴⁹⁹²² is an apocalyptic number.

649922 is a deficient number, since it is larger than the sum of its proper divisors (550270).

649922 is a wasteful number, since it uses less digits than its factorization.

649922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593.

The product of its digits is 7776, while the sum is 32.

The square root of 649922 is about 806.1773998321. The cubic root of 649922 is about 86.6204454391.

The spelling of 649922 in words is "six hundred forty-nine thousand, nine hundred twenty-two".