649322 has 4 divisors (see below), whose sum is σ = 973986. Its totient is φ = 324660.

The previous prime is 649321. The next prime is 649361. The reversal of 649322 is 223946.

649322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223946 = 2 ⋅111973.

It can be written as a sum of positive squares in only one way, i.e., 358801 + 290521 = 599^2 + 539^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 649291 and 649300.

It is not an unprimeable number, because it can be changed into a prime (649321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162329 + ... + 162332.

2⁶⁴⁹³²² is an apocalyptic number.

649322 is a deficient number, since it is larger than the sum of its proper divisors (324664).

649322 is a wasteful number, since it uses less digits than its factorization.

649322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324663.

The product of its digits is 2592, while the sum is 26.

The square root of 649322 is about 805.8051873747. The cubic root of 649322 is about 86.5937815887.

The spelling of 649322 in words is "six hundred forty-nine thousand, three hundred twenty-two".