6621265 has 16 divisors (see below), whose sum is σ = 9152640. Its totient is φ = 4504320.

The previous prime is 6621239. The next prime is 6621281. The reversal of 6621265 is 5621266.

It is not a de Polignac number, because 6621265 - 2⁵ = 6621233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4185 + ... + 5545.

It is an arithmetic number, because the mean of its divisors is an integer number (572040).

Almost surely, 2^6621265 is an apocalyptic number.

It is an amenable number.

6621265 is a deficient number, since it is larger than the sum of its proper divisors (2531375).

6621265 is a wasteful number, since it uses less digits than its factorization.

6621265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512.

The product of its digits is 4320, while the sum is 28.

The square root of 6621265 is about 2573.1818824172. The cubic root of 6621265 is about 187.7789861648.

Subtracting from 6621265 its reverse (5621266), we obtain a palindrome (999999).

It can be divided in two parts, 6621 and 265, that added together give a palindrome (6886).

The spelling of 6621265 in words is "six million, six hundred twenty-one thousand, two hundred sixty-five".