77818112 has 36 divisors (see below), whose sum is σ = 164478636. Its totient is φ = 36618240.

The previous prime is 77818087. The next prime is 77818121. The reversal of 77818112 is 21181877.

It can be written as a sum of positive squares in 2 ways, for example, as 45373696 + 32444416 = 6736^2 + 5696^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4589 + ... + 13292.

It is an arithmetic number, because the mean of its divisors is an integer number (4568851).

Almost surely, 2^77818112 is an apocalyptic number.

It is an amenable number.

77818112 is an abundant number, since it is smaller than the sum of its proper divisors (86660524).

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

77818112 is a wasteful number, since it uses less digits than its factorization.

77818112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17914 (or 17900 counting only the distinct ones).

The product of its digits is 6272, while the sum is 35.

The square root of 77818112 is about 8821.4574759503. The cubic root of 77818112 is about 426.9334962892.

Adding to 77818112 its reverse (21181877), we get a palindrome (98999989).

The spelling of 77818112 in words is "seventy-seven million, eight hundred eighteen thousand, one hundred twelve".