6697777966 has 16 divisors (see below), whose sum is σ = 11021235840. Its totient is φ = 3027434680.

The previous prime is 6697777949. The next prime is 6697777973.

6697777966 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6697777895 and 6697777904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846466 + ... + 854341.

It is an arithmetic number, because the mean of its divisors is an integer number (688827240).

Almost surely, 2^6697777966 is an apocalyptic number.

6697777966 is a deficient number, since it is larger than the sum of its proper divisors (4323457874).

6697777966 is a wasteful number, since it uses less digits than its factorization.

6697777966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700999.

The product of its digits is 252047376, while the sum is 70.

The square root of 6697777966 is about 81839.9533602018. The cubic root of 6697777966 is about 1884.9952006857.

The spelling of 6697777966 in words is "six billion, six hundred ninety-seven million, seven hundred seventy-seven thousand, nine hundred sixty-six".