77716115 has 8 divisors (see below), whose sum is σ = 95534208. Its totient is φ = 60656320.

The previous prime is 77716097. The next prime is 77716117. The reversal of 77716115 is 51161777.

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

It is a de Polignac number, because none of the positive numbers 2^k-77716115 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77716117) 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, 189347 + ... + 189756.

It is an arithmetic number, because the mean of its divisors is an integer number (11941776).

Almost surely, 2^77716115 is an apocalyptic number.

77716115 is a deficient number, since it is larger than the sum of its proper divisors (17818093).

77716115 is a wasteful number, since it uses less digits than its factorization.

77716115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379149.

The product of its digits is 10290, while the sum is 35.

The square root of 77716115 is about 8815.6743928074. The cubic root of 77716115 is about 426.7468860262.

The spelling of 77716115 in words is "seventy-seven million, seven hundred sixteen thousand, one hundred fifteen".