1623265 has 16 divisors (see below), whose sum is σ = 2344320. Its totient is φ = 1054080.

The previous prime is 1623263. The next prime is 1623269. The reversal of 1623265 is 5623261.

It is not a de Polignac number, because 1623265 - 2¹ = 1623263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1623263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 556 + ... + 1885.

It is an arithmetic number, because the mean of its divisors is an integer number (146520).

2^1623265 is an apocalyptic number.

It is an amenable number.

1623265 is a deficient number, since it is larger than the sum of its proper divisors (721055).

1623265 is a wasteful number, since it uses less digits than its factorization.

1623265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472.

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

The square root of 1623265 is about 1274.0741736649. The cubic root of 1623265 is about 117.5248777865.

The spelling of 1623265 in words is "one million, six hundred twenty-three thousand, two hundred sixty-five".