77968786 has 8 divisors (see below), whose sum is σ = 133660800. Its totient is φ = 33415188.

The previous prime is 77968763. The next prime is 77968801. The reversal of 77968786 is 68786977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 77968786.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2784586 + ... + 2784613.

It is an arithmetic number, because the mean of its divisors is an integer number (16707600).

Almost surely, 2^77968786 is an apocalyptic number.

77968786 is a deficient number, since it is larger than the sum of its proper divisors (55692014).

77968786 is a wasteful number, since it uses less digits than its factorization.

77968786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5569208.

The product of its digits is 7112448, while the sum is 58.

The square root of 77968786 is about 8829.9935447315. The cubic root of 77968786 is about 427.2088662201.

The spelling of 77968786 in words is "seventy-seven million, nine hundred sixty-eight thousand, seven hundred eighty-six".