77676679 has 4 divisors (see below), whose sum is σ = 77752480. Its totient is φ = 77600880.

The previous prime is 77676661. The next prime is 77676701. The reversal of 77676679 is 97667677.

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

It is a cyclic number.

It is not a de Polignac number, because 77676679 - 2⁵ = 77676647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77676649) 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, 36342 + ... + 38419.

It is an arithmetic number, because the mean of its divisors is an integer number (19438120).

Almost surely, 2^77676679 is an apocalyptic number.

77676679 is a deficient number, since it is larger than the sum of its proper divisors (75801).

77676679 is a wasteful number, since it uses less digits than its factorization.

77676679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75800.

The product of its digits is 4667544, while the sum is 55.

The square root of 77676679 is about 8813.4374111353. The cubic root of 77676679 is about 426.6746914859.

The spelling of 77676679 in words is "seventy-seven million, six hundred seventy-six thousand, six hundred seventy-nine".