2116997 has 2 divisors, whose sum is σ = 2116998. Its totient is φ = 2116996.

The previous prime is 2116991. The next prime is 2117039. The reversal of 2116997 is 7996112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2033476 + 83521 = 1426^2 + 289^2 .

It is a cyclic number.

It is not a de Polignac number, because 2116997 - 2⁴ = 2116981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2116991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058498 + 1058499.

It is an arithmetic number, because the mean of its divisors is an integer number (1058499).

2^2116997 is an apocalyptic number.

It is an amenable number.

2116997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116997 is an equidigital number, since it uses as much as digits as its factorization.

2116997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 35.

The square root of 2116997 is about 1454.9903779751. The cubic root of 2116997 is about 128.4024806798.

It can be divided in two parts, 2116 and 997, that added together give a palindrome (3113).

The spelling of 2116997 in words is "two million, one hundred sixteen thousand, nine hundred ninety-seven".