6993993971 has 2 divisors, whose sum is σ = 6993993972. Its totient is φ = 6993993970.

The previous prime is 6993993967. The next prime is 6993993997. The reversal of 6993993971 is 1793993996.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6993993971 - 2² = 6993993967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6993993898 and 6993993907.

It is not a weakly prime, because it can be changed into another prime (6993995971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3496996985 + 3496996986.

It is an arithmetic number, because the mean of its divisors is an integer number (3496996986).

Almost surely, 2^6993993971 is an apocalyptic number.

6993993971 is a deficient number, since it is larger than the sum of its proper divisors (1).

6993993971 is an equidigital number, since it uses as much as digits as its factorization.

6993993971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22320522, while the sum is 65.

The square root of 6993993971 is about 83630.1020625947. The cubic root of 6993993971 is about 1912.3839252662.

The spelling of 6993993971 in words is "six billion, nine hundred ninety-three million, nine hundred ninety-three thousand, nine hundred seventy-one".