2116605 has 8 divisors (see below), whose sum is σ = 3386592. Its totient is φ = 1128848.

The previous prime is 2116601. The next prime is 2116607. The reversal of 2116605 is 5066112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2116605 - 2² = 2116601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116601) 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, 70539 + ... + 70568.

It is an arithmetic number, because the mean of its divisors is an integer number (423324).

2^2116605 is an apocalyptic number.

It is an amenable number.

2116605 is a deficient number, since it is larger than the sum of its proper divisors (1269987).

2116605 is a wasteful number, since it uses less digits than its factorization.

2116605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141115.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2116605 is about 1454.8556629439. The cubic root of 2116605 is about 128.3945548491.

The spelling of 2116605 in words is "two million, one hundred sixteen thousand, six hundred five".