2216598697 has 4 divisors (see below), whose sum is σ = 2223726336. Its totient is φ = 2209471060.

The previous prime is 2216598689. The next prime is 2216598719. The reversal of 2216598697 is 7968956122.

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 2216598697 - 2³ = 2216598689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2216598617) 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, 3563353 + ... + 3563974.

It is an arithmetic number, because the mean of its divisors is an integer number (555931584).

Almost surely, 2^2216598697 is an apocalyptic number.

It is an amenable number.

2216598697 is a deficient number, since it is larger than the sum of its proper divisors (7127639).

2216598697 is an equidigital number, since it uses as much as digits as its factorization.

2216598697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7127638.

The product of its digits is 3265920, while the sum is 55.

The square root of 2216598697 is about 47080.7678038496. The cubic root of 2216598697 is about 1303.8541827066.

The spelling of 2216598697 in words is "two billion, two hundred sixteen million, five hundred ninety-eight thousand, six hundred ninety-seven".