2149687 has 2 divisors, whose sum is σ = 2149688. Its totient is φ = 2149686.

The previous prime is 2149681. The next prime is 2149703. The reversal of 2149687 is 7869412.

2149687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2149687 - 2⁷ = 2149559 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2149681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074843 + 1074844.

It is an arithmetic number, because the mean of its divisors is an integer number (1074844).

2^2149687 is an apocalyptic number.

2149687 is the 847-th hex number.

2149687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149687 is an equidigital number, since it uses as much as digits as its factorization.

2149687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 37.

The square root of 2149687 is about 1466.1810938626. The cubic root of 2149687 is about 129.0600245467.

The spelling of 2149687 in words is "two million, one hundred forty-nine thousand, six hundred eighty-seven".