653261 has 4 divisors (see below), whose sum is σ = 746592. Its totient is φ = 559932.

The previous prime is 653243. The next prime is 653267. The reversal of 653261 is 162356.

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 653261 - 2⁶ = 653197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653267) 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, 46655 + ... + 46668.

It is an arithmetic number, because the mean of its divisors is an integer number (186648).

2⁶⁵³²⁶¹ is an apocalyptic number.

It is an amenable number.

653261 is a deficient number, since it is larger than the sum of its proper divisors (93331).

653261 is an equidigital number, since it uses as much as digits as its factorization.

653261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93330.

The product of its digits is 1080, while the sum is 23.

The square root of 653261 is about 808.2456309811. The cubic root of 653261 is about 86.7685307854.

The spelling of 653261 in words is "six hundred fifty-three thousand, two hundred sixty-one".