649652 has 6 divisors (see below), whose sum is σ = 1136898. Its totient is φ = 324824.

The previous prime is 649651. The next prime is 649657. The reversal of 649652 is 256946.

It can be written as a sum of positive squares in only one way, i.e., 649636 + 16 = 806^2 + 4^2 .

It is a super-2 number, since 2×649652² = 844095442208, which contains 22 as substring.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649651) 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, 81203 + ... + 81210.

It is an arithmetic number, because the mean of its divisors is an integer number (189483).

2⁶⁴⁹⁶⁵² is an apocalyptic number.

It is an amenable number.

649652 is a deficient number, since it is larger than the sum of its proper divisors (487246).

649652 is a wasteful number, since it uses less digits than its factorization.

649652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162417 (or 162415 counting only the distinct ones).

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

The square root of 649652 is about 806.0099254972. The cubic root of 649652 is about 86.6084487381.

The spelling of 649652 in words is "six hundred forty-nine thousand, six hundred fifty-two".