6993506401 has 4 divisors (see below), whose sum is σ = 7992578752. Its totient is φ = 5994434052.

The previous prime is 6993506389. The next prime is 6993506437. The reversal of 6993506401 is 1046053996.

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 a de Polignac number, because none of the positive numbers 2^k-6993506401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6993506441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499536165 + ... + 499536178.

It is an arithmetic number, because the mean of its divisors is an integer number (1998144688).

Almost surely, 2^6993506401 is an apocalyptic number.

It is an amenable number.

6993506401 is a deficient number, since it is larger than the sum of its proper divisors (999072351).

6993506401 is an equidigital number, since it uses as much as digits as its factorization.

6993506401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999072350.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 6993506401 is about 83627.1869728978. The cubic root of 6993506401 is about 1912.3394851031.

The spelling of 6993506401 in words is "six billion, nine hundred ninety-three million, five hundred six thousand, four hundred one".