649746 has 12 divisors (see below), whose sum is σ = 1407822. Its totient is φ = 216576.

The previous prime is 649739. The next prime is 649751. The reversal of 649746 is 647946.

649746 is a `hidden beast` number, since 649 + 7 + 4 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 622521 + 27225 = 789^2 + 165^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 649746.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18031 + ... + 18066.

2⁶⁴⁹⁷⁴⁶ is an apocalyptic number.

649746 is an abundant number, since it is smaller than the sum of its proper divisors (758076).

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

649746 is a wasteful number, since it uses less digits than its factorization.

649746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36105 (or 36102 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 649746 is about 806.0682353250. The cubic root of 649746 is about 86.6126257444.

It can be divided in two parts, 64974 and 6, that added together give a triangular number (64980 = T₃₆₀).

The spelling of 649746 in words is "six hundred forty-nine thousand, seven hundred forty-six".