6966662399 has 6 divisors (see below), whose sum is σ = 7020266280. Its totient is φ = 6913464740.

The previous prime is 6966662393. The next prime is 6966662411. The reversal of 6966662399 is 9932666696.

It is a de Polignac number, because none of the positive numbers 2^k-6966662399 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 (6966662393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 185819 + ... + 220140.

It is an arithmetic number, because the mean of its divisors is an integer number (1170044380).

Almost surely, 2^6966662399 is an apocalyptic number.

6966662399 is a deficient number, since it is larger than the sum of its proper divisors (53603881).

6966662399 is an equidigital number, since it uses as much as digits as its factorization.

6966662399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406221 (or 406090 counting only the distinct ones).

The product of its digits is 34012224, while the sum is 62.

The square root of 6966662399 is about 83466.5346051937. The cubic root of 6966662399 is about 1909.8895616087.

The spelling of 6966662399 in words is "six billion, nine hundred sixty-six million, six hundred sixty-two thousand, three hundred ninety-nine".