6996514991 has 4 divisors (see below), whose sum is σ = 6998080152. Its totient is φ = 6994949832.

The previous prime is 6996514949. The next prime is 6996514997. The reversal of 6996514991 is 1994156996.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6996514991 - 2¹⁸ = 6996252847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6996514991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6996514997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775856 + ... + 784821.

It is an arithmetic number, because the mean of its divisors is an integer number (1749520038).

Almost surely, 2^6996514991 is an apocalyptic number.

6996514991 is a deficient number, since it is larger than the sum of its proper divisors (1565161).

6996514991 is a wasteful number, since it uses less digits than its factorization.

6996514991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565160.

The product of its digits is 4723920, while the sum is 59.

The square root of 6996514991 is about 83645.1731482457. The cubic root of 6996514991 is about 1912.6136737708.

The spelling of 6996514991 in words is "six billion, nine hundred ninety-six million, five hundred fourteen thousand, nine hundred ninety-one".