77808107 has 6 divisors (see below), whose sum is σ = 84253932. Its totient is φ = 71822712.

The previous prime is 77808083. The next prime is 77808121. The reversal of 77808107 is 70180877.

It is not a de Polignac number, because 77808107 - 2¹² = 77804011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77808007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 230033 + ... + 230370.

It is an arithmetic number, because the mean of its divisors is an integer number (14042322).

Almost surely, 2^77808107 is an apocalyptic number.

77808107 is a deficient number, since it is larger than the sum of its proper divisors (6445825).

77808107 is a wasteful number, since it uses less digits than its factorization.

77808107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460429 (or 460416 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 38.

The square root of 77808107 is about 8820.8903745597. The cubic root of 77808107 is about 426.9151986950.

The spelling of 77808107 in words is "seventy-seven million, eight hundred eight thousand, one hundred seven".