7777222223 has 8 divisors (see below), whose sum is σ = 7811287536. Its totient is φ = 7743225600.

The previous prime is 7777222217. The next prime is 7777222241. The reversal of 7777222223 is 3222227777.

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

It is a cyclic number.

It is not a de Polignac number, because 7777222223 - 2⁸ = 7777221967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7777222213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216668 + ... + 249998.

It is an arithmetic number, because the mean of its divisors is an integer number (976410942).

Almost surely, 2^7777222223 is an apocalyptic number.

7777222223 is a deficient number, since it is larger than the sum of its proper divisors (34065313).

7777222223 is a wasteful number, since it uses less digits than its factorization.

7777222223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34345.

The product of its digits is 230496, while the sum is 41.

The square root of 7777222223 is about 88188.5606130410. The cubic root of 7777222223 is about 1981.2601425468.

It can be divided in two parts, 7777 and 222223, that multiplied together give a palindrome (1728228271).

The spelling of 7777222223 in words is "seven billion, seven hundred seventy-seven million, two hundred twenty-two thousand, two hundred twenty-three".