649422 has 24 divisors (see below), whose sum is σ = 1424280. Its totient is φ = 213840.

The previous prime is 649421. The next prime is 649423. The reversal of 649422 is 224946.

It is an interprime number because it is at equal distance from previous prime (649421) and next prime (649423).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1797 + ... + 2127.

It is an arithmetic number, because the mean of its divisors is an integer number (59345).

2⁶⁴⁹⁴²² is an apocalyptic number.

649422 is an abundant number, since it is smaller than the sum of its proper divisors (774858).

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

649422 is a wasteful number, since it uses less digits than its factorization.

649422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 445 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 649422 is about 805.8672347229. The cubic root of 649422 is about 86.5982267041.

The spelling of 649422 in words is "six hundred forty-nine thousand, four hundred twenty-two".