3966776693 has 4 divisors (see below), whose sum is σ = 4327392768. Its totient is φ = 3606160620.

The previous prime is 3966776689. The next prime is 3966776729.

3966776693 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3966776693 - 2² = 3966776689 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 (3966776893) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 180308021 + ... + 180308042.

It is an arithmetic number, because the mean of its divisors is an integer number (1081848192).

Almost surely, 2^3966776693 is an apocalyptic number.

It is an amenable number.

3966776693 is a deficient number, since it is larger than the sum of its proper divisors (360616075).

3966776693 is a wasteful number, since it uses less digits than its factorization.

3966776693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360616074.

The product of its digits is 46294416, while the sum is 62.

The square root of 3966776693 is about 62982.3522345744. The cubic root of 3966776693 is about 1582.9939350633.

The spelling of 3966776693 in words is "three billion, nine hundred sixty-six million, seven hundred seventy-six thousand, six hundred ninety-three".