660253 has 8 divisors (see below), whose sum is σ = 726336. Its totient is φ = 595200.

The previous prime is 660251. The next prime is 660271. The reversal of 660253 is 352066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 660253 - 2¹ = 660251 is a prime.

It is a Duffinian number.

660253 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1968 + ... + 2278.

It is an arithmetic number, because the mean of its divisors is an integer number (90792).

2⁶⁶⁰²⁵³ is an apocalyptic number.

It is an amenable number.

660253 is a deficient number, since it is larger than the sum of its proper divisors (66083).

660253 is a wasteful number, since it uses less digits than its factorization.

660253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 660253 is about 812.5595362803. The cubic root of 660253 is about 87.0770005748.

The spelling of 660253 in words is "six hundred sixty thousand, two hundred fifty-three".