653265 has 20 divisors (see below), whose sum is σ = 1171764. Its totient is φ = 348192.

The previous prime is 653243. The next prime is 653267. The reversal of 653265 is 562356.

653265 is a `hidden beast` number, since 653 + 2 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 321489 + 331776 = 567^2 + 576^2 .

It is not a de Polignac number, because 653265 - 2⁹ = 652753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

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 in 19 ways as a sum of consecutive naturals, for example, 402 + ... + 1211.

2⁶⁵³²⁶⁵ is an apocalyptic number.

It is an amenable number.

653265 is a deficient number, since it is larger than the sum of its proper divisors (518499).

653265 is a wasteful number, since it uses less digits than its factorization.

653265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630 (or 1621 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 653265 is about 808.2481054726. The cubic root of 653265 is about 86.7687078833.

Subtracting from 653265 its reverse (562356), we obtain a palindrome (90909).

The spelling of 653265 in words is "six hundred fifty-three thousand, two hundred sixty-five".