2116827 has 8 divisors (see below), whose sum is σ = 3136080. Its totient is φ = 1411200.

The previous prime is 2116817. The next prime is 2116837. The reversal of 2116827 is 7286112.

It is an interprime number because it is at equal distance from previous prime (2116817) and next prime (2116837).

It is not a de Polignac number, because 2116827 - 2⁴ = 2116811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 78401 = 2116827 / (2 + 1 + 1 + 6 + 8 + 2 + 7).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2116827.

It is not an unprimeable number, because it can be changed into a prime (2116817) 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, 39174 + ... + 39227.

It is an arithmetic number, because the mean of its divisors is an integer number (392010).

2^2116827 is an apocalyptic number.

2116827 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2116827 is a deficient number, since it is larger than the sum of its proper divisors (1019253).

2116827 is an equidigital number, since it uses as much as digits as its factorization.

2116827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78410 (or 78404 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 2116827 is about 1454.9319571719. The cubic root of 2116827 is about 128.3990435775.

It can be divided in two parts, 21168 and 27, that multiplied together give a square (571536 = 756²).

The spelling of 2116827 in words is "two million, one hundred sixteen thousand, eight hundred twenty-seven".