649935 has 48 divisors (see below), whose sum is σ = 1336608. Its totient is φ = 288000.

The previous prime is 649921. The next prime is 649937. The reversal of 649935 is 539946.

649935 is a `hidden beast` number, since 649 + 9 + 3 + 5 = 666.

It is not a de Polignac number, because 649935 - 2⁶ = 649871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 649935.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6385 + ... + 6485.

It is an arithmetic number, because the mean of its divisors is an integer number (27846).

2⁶⁴⁹⁹³⁵ is an apocalyptic number.

649935 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

649935 is an abundant number, since it is smaller than the sum of its proper divisors (686673).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649935 is a wasteful number, since it uses less digits than its factorization.

649935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 133 counting only the distinct ones).

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

The square root of 649935 is about 806.1854625333. The cubic root of 649935 is about 86.6210229742.

It can be divided in two parts, 64 and 9935, that added together give a palindrome (9999).

The spelling of 649935 in words is "six hundred forty-nine thousand, nine hundred thirty-five".