77871116 has 12 divisors (see below), whose sum is σ = 137315640. Its totient is φ = 38638080.

The previous prime is 77871109. The next prime is 77871121. The reversal of 77871116 is 61117877.

It is a self number, because there is not a number n which added to its sum of digits gives 77871116.

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, 73781 + ... + 74828.

It is an arithmetic number, because the mean of its divisors is an integer number (11442970).

Almost surely, 2^77871116 is an apocalyptic number.

It is an amenable number.

77871116 is a deficient number, since it is larger than the sum of its proper divisors (59444524).

77871116 is a wasteful number, since it uses less digits than its factorization.

77871116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148744 (or 148742 counting only the distinct ones).

The product of its digits is 16464, while the sum is 38.

The square root of 77871116 is about 8824.4612300129. The cubic root of 77871116 is about 427.0304062357.

The spelling of 77871116 in words is "seventy-seven million, eight hundred seventy-one thousand, one hundred sixteen".