9677666678 has 4 divisors (see below), whose sum is σ = 14516500020. Its totient is φ = 4838833338.

The previous prime is 9677666657. The next prime is 9677666693. The reversal of 9677666678 is 8766667769.

9677666678 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8766667769 = 389 ⋅22536421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2419416668 + ... + 2419416671.

It is an arithmetic number, because the mean of its divisors is an integer number (3629125005).

Almost surely, 2^9677666678 is an apocalyptic number.

9677666678 is a deficient number, since it is larger than the sum of its proper divisors (4838833342).

9677666678 is a wasteful number, since it uses less digits than its factorization.

9677666678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4838833341.

The product of its digits is 192036096, while the sum is 68.

The square root of 9677666678 is about 98375.1324166834. The cubic root of 9677666678 is about 2131.0332205754.

The spelling of 9677666678 in words is "nine billion, six hundred seventy-seven million, six hundred sixty-six thousand, six hundred seventy-eight".