220777168 has 40 divisors (see below), whose sum is σ = 433766880. Its totient is φ = 108850560.

The previous prime is 220777163. The next prime is 220777201. The reversal of 220777168 is 861777022.

It is a self number, because there is not a number n which added to its sum of digits gives 220777168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220777163) 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, 449403 + ... + 449893.

It is an arithmetic number, because the mean of its divisors is an integer number (10844172).

Almost surely, 2^220777168 is an apocalyptic number.

It is an amenable number.

220777168 is a deficient number, since it is larger than the sum of its proper divisors (212989712).

220777168 is a wasteful number, since it uses less digits than its factorization.

220777168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 220777168 is about 14858.5722059692. The cubic root of 220777168 is about 604.3910892006.

The spelling of 220777168 in words is "two hundred twenty million, seven hundred seventy-seven thousand, one hundred sixty-eight".