7764222 has 8 divisors (see below), whose sum is σ = 15528456. Its totient is φ = 2588072.

The previous prime is 7764221. The next prime is 7764247. The reversal of 7764222 is 2224677.

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

7764222 is an admirable number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 7764222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7764221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647013 + ... + 647024.

It is an arithmetic number, because the mean of its divisors is an integer number (1941057).

Almost surely, 2^7764222 is an apocalyptic number.

7764222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7764222 is a wasteful number, since it uses less digits than its factorization.

7764222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294042.

The product of its digits is 9408, while the sum is 30.

The square root of 7764222 is about 2786.4353572261. The cubic root of 7764222 is about 198.0155584142.

Adding to 7764222 its reverse (2224677), we get a palindrome (9988899).

The spelling of 7764222 in words is "seven million, seven hundred sixty-four thousand, two hundred twenty-two".