653266 has 4 divisors (see below), whose sum is σ = 979902. Its totient is φ = 326632.

The previous prime is 653243. The next prime is 653267. The reversal of 653266 is 662356.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 469225 + 184041 = 685^2 + 429^2 .

It is not an unprimeable number, because it can be changed into a prime (653267) by changing a digit.

653266 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163315 + ... + 163318.

2⁶⁵³²⁶⁶ is an apocalyptic number.

653266 is a deficient number, since it is larger than the sum of its proper divisors (326636).

653266 is a wasteful number, since it uses less digits than its factorization.

653266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326635.

The product of its digits is 6480, while the sum is 28.

The square root of 653266 is about 808.2487240943. The cubic root of 653266 is about 86.7687521576.

It can be divided in two parts, 653 and 266, that added together give a palindrome (919).

The spelling of 653266 in words is "six hundred fifty-three thousand, two hundred sixty-six".