649492 has 12 divisors (see below), whose sum is σ = 1142260. Its totient is φ = 323136.

The previous prime is 649487. The next prime is 649499. The reversal of 649492 is 294946.

It can be written as a sum of positive squares in 2 ways, for example, as 524176 + 125316 = 724^2 + 354^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1384 + ... + 1792.

2⁶⁴⁹⁴⁹² is an apocalyptic number.

It is an amenable number.

649492 is a deficient number, since it is larger than the sum of its proper divisors (492768).

649492 is a wasteful number, since it uses less digits than its factorization.

649492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810 (or 808 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The square root of 649492 is about 805.9106650244. The cubic root of 649492 is about 86.6013380134.

The spelling of 649492 in words is "six hundred forty-nine thousand, four hundred ninety-two".