68222780 has 24 divisors (see below), whose sum is σ = 144187008. Its totient is φ = 27114048.

The previous prime is 68222767. The next prime is 68222801. The reversal of 68222780 is 8722286.

It is a self number, because there is not a number n which added to its sum of digits gives 68222780.

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, 7724 + ... + 14003.

It is an arithmetic number, because the mean of its divisors is an integer number (6007792).

Almost surely, 2^68222780 is an apocalyptic number.

It is an amenable number.

68222780 is an abundant number, since it is smaller than the sum of its proper divisors (75964228).

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

68222780 is a wasteful number, since it uses less digits than its factorization.

68222780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21893 (or 21891 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 68222780 is about 8259.7082272923. The cubic root of 68222780 is about 408.6107650475.

The spelling of 68222780 in words is "sixty-eight million, two hundred twenty-two thousand, seven hundred eighty".