649253 has 4 divisors (see below), whose sum is σ = 708288. Its totient is φ = 590220.

The previous prime is 649217. The next prime is 649261. The reversal of 649253 is 352946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 649253 - 2⁸ = 648997 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 6² + 4⁹ + 2¹⁷ + 9³ + 5⁷ + 3¹¹ .

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 649253.

It is not an unprimeable number, because it can be changed into a prime (649273) 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, 29501 + ... + 29522.

It is an arithmetic number, because the mean of its divisors is an integer number (177072).

2⁶⁴⁹²⁵³ is an apocalyptic number.

It is an amenable number.

649253 is a deficient number, since it is larger than the sum of its proper divisors (59035).

649253 is a wasteful number, since it uses less digits than its factorization.

649253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59034.

The product of its digits is 6480, while the sum is 29.

The square root of 649253 is about 805.7623719187. The cubic root of 649253 is about 86.5907141930.

The spelling of 649253 in words is "six hundred forty-nine thousand, two hundred fifty-three".