663222365 has 32 divisors (see below), whose sum is σ = 898200576. Its totient is φ = 466456320.

The previous prime is 663222353. The next prime is 663222389. The reversal of 663222365 is 563222366.

It is not a de Polignac number, because 663222365 - 2¹⁴ = 663205981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 404327 + ... + 405963.

It is an arithmetic number, because the mean of its divisors is an integer number (28068768).

Almost surely, 2^663222365 is an apocalyptic number.

663222365 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

663222365 is a deficient number, since it is larger than the sum of its proper divisors (234978211).

663222365 is a wasteful number, since it uses less digits than its factorization.

663222365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949.

The product of its digits is 77760, while the sum is 35.

The square root of 663222365 is about 25753.1039876750. The cubic root of 663222365 is about 872.0734290808.

Subtracting from 663222365 its reverse (563222366), we obtain a palindrome (99999999).

The spelling of 663222365 in words is "six hundred sixty-three million, two hundred twenty-two thousand, three hundred sixty-five".