2116965 has 8 divisors (see below), whose sum is σ = 3387168. Its totient is φ = 1129040.

The previous prime is 2116957. The next prime is 2116967. The reversal of 2116965 is 5696112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2116965 - 2³ = 2116957 is a prime.

It is a super-2 number, since 2×2116965² = 8963081622450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70551 + ... + 70580.

It is an arithmetic number, because the mean of its divisors is an integer number (423396).

2^2116965 is an apocalyptic number.

It is an amenable number.

2116965 is a deficient number, since it is larger than the sum of its proper divisors (1270203).

2116965 is a wasteful number, since it uses less digits than its factorization.

2116965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141139.

The product of its digits is 3240, while the sum is 30.

The square root of 2116965 is about 1454.9793812972. The cubic root of 2116965 is about 128.4018337099.

It can be divided in two parts, 2116 and 965, that added together give a triangular number (3081 = T₇₈).

The spelling of 2116965 in words is "two million, one hundred sixteen thousand, nine hundred sixty-five".