77768108 has 24 divisors (see below), whose sum is σ = 148768704. Its totient is φ = 35277200.

The previous prime is 77768087. The next prime is 77768113. The reversal of 77768108 is 80186777.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 24323 + ... + 27333.

It is an arithmetic number, because the mean of its divisors is an integer number (6198696).

Almost surely, 2^77768108 is an apocalyptic number.

It is an amenable number.

77768108 is a deficient number, since it is larger than the sum of its proper divisors (71000596).

77768108 is a wasteful number, since it uses less digits than its factorization.

77768108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3613 (or 3611 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 44.

The square root of 77768108 is about 8818.6227949720. The cubic root of 77768108 is about 426.8420310494.

The spelling of 77768108 in words is "seventy-seven million, seven hundred sixty-eight thousand, one hundred eight".