77222768 has 40 divisors (see below), whose sum is σ = 171572352. Its totient is φ = 32983488.

The previous prime is 77222741. The next prime is 77222773. The reversal of 77222768 is 86722277.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37871 + ... + 39857.

Almost surely, 2^77222768 is an apocalyptic number.

It is an amenable number.

77222768 is an abundant number, since it is smaller than the sum of its proper divisors (94349584).

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

77222768 is a wasteful number, since it uses less digits than its factorization.

77222768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2349 (or 2343 counting only the distinct ones).

The product of its digits is 131712, while the sum is 41.

The square root of 77222768 is about 8787.6486047179. The cubic root of 77222768 is about 425.8419627295.

The spelling of 77222768 in words is "seventy-seven million, two hundred twenty-two thousand, seven hundred sixty-eight".