2116709 has 8 divisors (see below), whose sum is σ = 2439168. Its totient is φ = 1799280.

The previous prime is 2116693. The next prime is 2116717. The reversal of 2116709 is 9076112.

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

It is not a de Polignac number, because 2116709 - 2⁴ = 2116693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116729) 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, 302 + ... + 2079.

It is an arithmetic number, because the mean of its divisors is an integer number (304896).

2^2116709 is an apocalyptic number.

It is an amenable number.

2116709 is a deficient number, since it is larger than the sum of its proper divisors (322459).

2116709 is a wasteful number, since it uses less digits than its factorization.

2116709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 2116709 is about 1454.8914048822. The cubic root of 2116709 is about 128.3966577159.

The spelling of 2116709 in words is "two million, one hundred sixteen thousand, seven hundred nine".