1263265 has 8 divisors (see below), whose sum is σ = 1537128. Its totient is φ = 996480.

The previous prime is 1263263. The next prime is 1263299. The reversal of 1263265 is 5623621.

It can be written as a sum of positive squares in 4 ways, for example, as 46656 + 1216609 = 216^2 + 1103^2 .

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

It is not a de Polignac number, because 1263265 - 2¹ = 1263263 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263263) 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, 1366 + ... + 2095.

It is an arithmetic number, because the mean of its divisors is an integer number (192141).

2^1263265 is an apocalyptic number.

It is an amenable number.

1263265 is a deficient number, since it is larger than the sum of its proper divisors (273863).

1263265 is an equidigital number, since it uses as much as digits as its factorization.

1263265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3539.

The product of its digits is 2160, while the sum is 25.

The square root of 1263265 is about 1123.9506216912. The cubic root of 1263265 is about 108.1014421819.

Adding to 1263265 its reverse (5623621), we get a palindrome (6886886).

The spelling of 1263265 in words is "one million, two hundred sixty-three thousand, two hundred sixty-five".