2217006997 has 16 divisors (see below), whose sum is σ = 2276854272. Its totient is φ = 2158053120.

The previous prime is 2217006991. The next prime is 2217007027. The reversal of 2217006997 is 7996007122.

It is not a de Polignac number, because 2217006997 - 2³ = 2217006989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2217006991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3738333 + ... + 3738925.

It is an arithmetic number, because the mean of its divisors is an integer number (142303392).

Almost surely, 2^2217006997 is an apocalyptic number.

It is an amenable number.

2217006997 is a deficient number, since it is larger than the sum of its proper divisors (59847275).

2217006997 is a wasteful number, since it uses less digits than its factorization.

2217006997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 2217006997 is about 47085.1037696637. The cubic root of 2217006997 is about 1303.9342349325.

The spelling of 2217006997 in words is "two billion, two hundred seventeen million, six thousand, nine hundred ninety-seven".