6993993967 has 2 divisors, whose sum is σ = 6993993968. Its totient is φ = 6993993966.

The previous prime is 6993993959. The next prime is 6993993971. The reversal of 6993993967 is 7693993996.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6993993967 - 2³ = 6993993959 is a prime.

It is a super-2 number, since 2×6993993967² = 97831903220864794178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6993993896 and 6993993905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6993993997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3496996983 + 3496996984.

It is an arithmetic number, because the mean of its divisors is an integer number (3496996984).

Almost surely, 2^6993993967 is an apocalyptic number.

6993993967 is a deficient number, since it is larger than the sum of its proper divisors (1).

6993993967 is an equidigital number, since it uses as much as digits as its factorization.

6993993967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 133923132, while the sum is 70.

The square root of 6993993967 is about 83630.1020386798. The cubic root of 6993993967 is about 1912.3839249016.

The spelling of 6993993967 in words is "six billion, nine hundred ninety-three million, nine hundred ninety-three thousand, nine hundred sixty-seven".