649522 has 12 divisors (see below), whose sum is σ = 1009386. Its totient is φ = 313280.

The previous prime is 649511. The next prime is 649529. The reversal of 649522 is 225946.

649522 is nontrivially palindromic in base 3.

649522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 185761 + 463761 = 431^2 + 681^2 .

It is a d-powerful number, because it can be written as 6⁵ + 4 + 5⁷ + 9⁴ + 2¹⁵ + 2¹⁹ .

It is not an unprimeable number, because it can be changed into a prime (649529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7254 + ... + 7342.

2⁶⁴⁹⁵²² is an apocalyptic number.

649522 is a deficient number, since it is larger than the sum of its proper divisors (359864).

649522 is an equidigital number, since it uses as much as digits as its factorization.

649522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 132 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 649522 is about 805.9292772942. The cubic root of 649522 is about 86.6026713632.

The spelling of 649522 in words is "six hundred forty-nine thousand, five hundred twenty-two".