649953 has 12 divisors (see below), whose sum is σ = 945828. Its totient is φ = 430080.

The previous prime is 649937. The next prime is 649969. The reversal of 649953 is 359946.

649953 is a `hidden beast` number, since 649 + 9 + 5 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (649937) and next prime (649969).

It can be written as a sum of positive squares in 2 ways, for example, as 567009 + 82944 = 753^2 + 288^2 .

It is not a de Polignac number, because 649953 - 2⁴ = 649937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642953) 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, 2173 + ... + 2453.

It is an arithmetic number, because the mean of its divisors is an integer number (78819).

2⁶⁴⁹⁹⁵³ is an apocalyptic number.

It is an amenable number.

649953 is a deficient number, since it is larger than the sum of its proper divisors (295875).

649953 is a wasteful number, since it uses less digits than its factorization.

649953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 541 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 649953 is about 806.1966261403. The cubic root of 649953 is about 86.6218226254.

The spelling of 649953 in words is "six hundred forty-nine thousand, nine hundred fifty-three".