649293 has 4 divisors (see below), whose sum is σ = 865728. Its totient is φ = 432860.

The previous prime is 649291. The next prime is 649307. The reversal of 649293 is 392946.

649293 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 649293 - 2¹ = 649291 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 4⁷ + 2¹⁹ + 9³ + 9⁵ + 3⁷ .

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649291) 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, 108213 + ... + 108218.

It is an arithmetic number, because the mean of its divisors is an integer number (216432).

2⁶⁴⁹²⁹³ is an apocalyptic number.

It is an amenable number.

649293 is a deficient number, since it is larger than the sum of its proper divisors (216435).

649293 is a wasteful number, since it uses less digits than its factorization.

649293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216434.

The product of its digits is 11664, while the sum is 33.

The square root of 649293 is about 805.7871927500. The cubic root of 649293 is about 86.5924924199.

The spelling of 649293 in words is "six hundred forty-nine thousand, two hundred ninety-three".