649562 has 4 divisors (see below), whose sum is σ = 974346. Its totient is φ = 324780.

The previous prime is 649559. The next prime is 649567. The reversal of 649562 is 265946.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 609961 + 39601 = 781^2 + 199^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 649562.

It is not an unprimeable number, because it can be changed into a prime (649567) 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 as a sum of consecutive naturals, namely, 162389 + ... + 162392.

2⁶⁴⁹⁵⁶² is an apocalyptic number.

649562 is a deficient number, since it is larger than the sum of its proper divisors (324784).

649562 is a wasteful number, since it uses less digits than its factorization.

649562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324783.

The product of its digits is 12960, while the sum is 32.

The square root of 649562 is about 805.9540929855. The cubic root of 649562 is about 86.6044490991.

The spelling of 649562 in words is "six hundred forty-nine thousand, five hundred sixty-two".