1163265 has 8 divisors (see below), whose sum is σ = 1861248. Its totient is φ = 620400.

The previous prime is 1163263. The next prime is 1163273. The reversal of 1163265 is 5623611.

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

It is not a de Polignac number, because 1163265 - 2¹ = 1163263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1163263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38761 + ... + 38790.

It is an arithmetic number, because the mean of its divisors is an integer number (232656).

It is a Proth number, since it is equal to 71 ⋅ 2¹⁴ + 1 and 71 < 2¹⁴.

2^1163265 is an apocalyptic number.

1163265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1163265 is a deficient number, since it is larger than the sum of its proper divisors (697983).

1163265 is an equidigital number, since it uses as much as digits as its factorization.

1163265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77559.

The product of its digits is 1080, while the sum is 24.

The square root of 1163265 is about 1078.5476345531. The cubic root of 1163265 is about 105.1702453596.

Adding to 1163265 its reverse (5623611), we get a palindrome (6786876).

The spelling of 1163265 in words is "one million, one hundred sixty-three thousand, two hundred sixty-five".