6998022217 has 4 divisors (see below), whose sum is σ = 7018189776. Its totient is φ = 6977854660.

The previous prime is 6998022211. The next prime is 6998022233. The reversal of 6998022217 is 7122208996.

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 not a de Polignac number, because 6998022217 - 2¹⁹ = 6997497929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6998022211) 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, 10083259 + ... + 10083952.

It is an arithmetic number, because the mean of its divisors is an integer number (1754547444).

Almost surely, 2^6998022217 is an apocalyptic number.

It is an amenable number.

6998022217 is a deficient number, since it is larger than the sum of its proper divisors (20167559).

6998022217 is a wasteful number, since it uses less digits than its factorization.

6998022217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20167558.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 6998022217 is about 83654.1823042937. The cubic root of 6998022217 is about 1912.7510056701.

The spelling of 6998022217 in words is "six billion, nine hundred ninety-eight million, twenty-two thousand, two hundred seventeen".