2116657 has 8 divisors (see below), whose sum is σ = 2252160. Its totient is φ = 1983600.

The previous prime is 2116651. The next prime is 2116663. The reversal of 2116657 is 7566112.

It is an interprime number because it is at equal distance from previous prime (2116651) and next prime (2116663).

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

It is not a de Polignac number, because 2116657 - 2¹⁵ = 2083889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2116651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1368 + ... + 2470.

It is an arithmetic number, because the mean of its divisors is an integer number (281520).

2^2116657 is an apocalyptic number.

It is an amenable number.

2116657 is a deficient number, since it is larger than the sum of its proper divisors (135503).

2116657 is a wasteful number, since it uses less digits than its factorization.

2116657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223.

The product of its digits is 2520, while the sum is 28.

The square root of 2116657 is about 1454.8735340228. The cubic root of 2116657 is about 128.3956062911.

The spelling of 2116657 in words is "two million, one hundred sixteen thousand, six hundred fifty-seven".