3968668693 has 8 divisors (see below), whose sum is σ = 4337045856. Its totient is φ = 3601556400.

The previous prime is 3968668667. The next prime is 3968668709.

3968668693 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 3968668693 - 2⁹ = 3968668181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3968668603) 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, 309646 + ... + 322207.

It is an arithmetic number, because the mean of its divisors is an integer number (542130732).

Almost surely, 2^3968668693 is an apocalyptic number.

It is an amenable number.

3968668693 is a deficient number, since it is larger than the sum of its proper divisors (368377163).

3968668693 is a wasteful number, since it uses less digits than its factorization.

3968668693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632435.

The product of its digits is 60466176, while the sum is 64.

The square root of 3968668693 is about 62997.3705244909. The cubic root of 3968668693 is about 1583.2455708129.

The spelling of 3968668693 in words is "three billion, nine hundred sixty-eight million, six hundred sixty-eight thousand, six hundred ninety-three".