777780223 has 8 divisors (see below), whose sum is σ = 849663360. Its totient is φ = 706093080.

The previous prime is 777780169. The next prime is 777780229. The reversal of 777780223 is 322087777.

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

It is not a de Polignac number, because 777780223 - 2²⁹ = 240909311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 777780223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (777780229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40633 + ... + 56626.

It is an arithmetic number, because the mean of its divisors is an integer number (106207920).

Almost surely, 2^777780223 is an apocalyptic number.

777780223 is a deficient number, since it is larger than the sum of its proper divisors (71883137).

777780223 is a wasteful number, since it uses less digits than its factorization.

777780223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97997.

The product of its (nonzero) digits is 230496, while the sum is 43.

The square root of 777780223 is about 27888.7113900947. The cubic root of 777780223 is about 919.6423558664.

The spelling of 777780223 in words is "seven hundred seventy-seven million, seven hundred eighty thousand, two hundred twenty-three".