77776117 has 8 divisors (see below), whose sum is σ = 81994752. Its totient is φ = 73664400.

The previous prime is 77776103. The next prime is 77776123. The reversal of 77776117 is 71167777.

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

It is a cyclic number.

It is not a de Polignac number, because 77776117 - 2¹⁹ = 77251829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77776147) 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 7 ways as a sum of consecutive naturals, for example, 25234 + ... + 28147.

It is an arithmetic number, because the mean of its divisors is an integer number (10249344).

Almost surely, 2^77776117 is an apocalyptic number.

It is an amenable number.

77776117 is a deficient number, since it is larger than the sum of its proper divisors (4218635).

77776117 is a wasteful number, since it uses less digits than its factorization.

77776117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53459.

The product of its digits is 100842, while the sum is 43.

The square root of 77776117 is about 8819.0768791297. The cubic root of 77776117 is about 426.8566834160.

The spelling of 77776117 in words is "seventy-seven million, seven hundred seventy-six thousand, one hundred seventeen".