649266 has 8 divisors (see below), whose sum is σ = 1298544. Its totient is φ = 216420.

The previous prime is 649261. The next prime is 649273. The reversal of 649266 is 662946.

It is a sphenic number, since it is the product of 3 distinct primes.

649266 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (649261) 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, 54100 + ... + 54111.

It is an arithmetic number, because the mean of its divisors is an integer number (162318).

2⁶⁴⁹²⁶⁶ is an apocalyptic number.

649266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

649266 is a wasteful number, since it uses less digits than its factorization.

649266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108216.

The product of its digits is 15552, while the sum is 33.

The square root of 649266 is about 805.7704387727. The cubic root of 649266 is about 86.5912921247.

The spelling of 649266 in words is "six hundred forty-nine thousand, two hundred sixty-six".