663265 has 8 divisors (see below), whose sum is σ = 803880. Its totient is φ = 525312.

The previous prime is 663263. The next prime is 663269. The reversal of 663265 is 562366.

663265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 73441 + 589824 = 271^2 + 768^2 .

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 663265 - 2¹ = 663263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (663263) 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, 64 + ... + 1153.

It is an arithmetic number, because the mean of its divisors is an integer number (100485).

2⁶⁶³²⁶⁵ is an apocalyptic number.

It is an amenable number.

663265 is a deficient number, since it is larger than the sum of its proper divisors (140615).

663265 is a wasteful number, since it uses less digits than its factorization.

663265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331.

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

The square root of 663265 is about 814.4108299869. The cubic root of 663265 is about 87.2092115651.

The spelling of 663265 in words is "six hundred sixty-three thousand, two hundred sixty-five".