77116827 has 4 divisors (see below), whose sum is σ = 102822440. Its totient is φ = 51411216.

The previous prime is 77116807. The next prime is 77116841. The reversal of 77116827 is 72861177.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-77116827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77116807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12852802 + ... + 12852807.

It is an arithmetic number, because the mean of its divisors is an integer number (25705610).

Almost surely, 2^77116827 is an apocalyptic number.

77116827 is a deficient number, since it is larger than the sum of its proper divisors (25705613).

77116827 is a wasteful number, since it uses less digits than its factorization.

77116827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25705612.

The product of its digits is 32928, while the sum is 39.

The square root of 77116827 is about 8781.6187004447. The cubic root of 77116827 is about 425.6471377628.

The spelling of 77116827 in words is "seventy-seven million, one hundred sixteen thousand, eight hundred twenty-seven".