2156683 has 2 divisors, whose sum is σ = 2156684. Its totient is φ = 2156682.

The previous prime is 2156681. The next prime is 2156699. The reversal of 2156683 is 3866512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2156683 - 2¹ = 2156681 is a prime.

Together with 2156681, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2156681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078341 + 1078342.

It is an arithmetic number, because the mean of its divisors is an integer number (1078342).

2^2156683 is an apocalyptic number.

2156683 is a deficient number, since it is larger than the sum of its proper divisors (1).

2156683 is an equidigital number, since it uses as much as digits as its factorization.

2156683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 31.

The square root of 2156683 is about 1468.5649457889. The cubic root of 2156683 is about 129.1998784293.

The spelling of 2156683 in words is "two million, one hundred fifty-six thousand, six hundred eighty-three".