8068747780 has 12 divisors (see below), whose sum is σ = 16944370380. Its totient is φ = 3227499104.

The previous prime is 8068747741. The next prime is 8068747787. The reversal of 8068747780 is 877478608.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6009040324 + 2059707456 = 77518^2 + 45384^2 .

It is not an unprimeable number, because it can be changed into a prime (8068747787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201718675 + ... + 201718714.

It is an arithmetic number, because the mean of its divisors is an integer number (1412030865).

Almost surely, 2^8068747780 is an apocalyptic number.

It is an amenable number.

8068747780 is an abundant number, since it is smaller than the sum of its proper divisors (8875622600).

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

8068747780 is a wasteful number, since it uses less digits than its factorization.

8068747780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403437398 (or 403437396 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 55.

The square root of 8068747780 is about 89826.2087589140. The cubic root of 8068747780 is about 2005.7126489519.

The spelling of 8068747780 in words is "eight billion, sixty-eight million, seven hundred forty-seven thousand, seven hundred eighty".