77697679677 has 8 divisors (see below), whose sum is σ = 103658984160. Its totient is φ = 51767414160.

The previous prime is 77697679663. The next prime is 77697679691.

77697679677 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (77697679663) and next prime (77697679691).

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

It is not a de Polignac number, because 77697679677 - 2¹² = 77697675581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77697679627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7753899 + ... + 7763912.

It is an arithmetic number, because the mean of its divisors is an integer number (12957373020).

Almost surely, 2^77697679677 is an apocalyptic number.

It is an amenable number.

77697679677 is a deficient number, since it is larger than the sum of its proper divisors (25961304483).

77697679677 is a wasteful number, since it uses less digits than its factorization.

77697679677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15519483.

The product of its digits is 2058386904, while the sum is 78.

The spelling of 77697679677 in words is "seventy-seven billion, six hundred ninety-seven million, six hundred seventy-nine thousand, six hundred seventy-seven".