2193687 has 12 divisors (see below), whose sum is σ = 3214224. Its totient is φ = 1441440.

The previous prime is 2193677. The next prime is 2193689. The reversal of 2193687 is 7863912.

2193687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2193687 - 2¹⁹ = 1669399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2193689) 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 in 11 ways as a sum of consecutive naturals, for example, 1078 + ... + 2355.

It is an arithmetic number, because the mean of its divisors is an integer number (267852).

2^2193687 is an apocalyptic number.

2193687 is a deficient number, since it is larger than the sum of its proper divisors (1020537).

2193687 is a wasteful number, since it uses less digits than its factorization.

2193687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3510 (or 3507 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 2193687 is about 1481.1100566805. The cubic root of 2193687 is about 129.9346219587.

The spelling of 2193687 in words is "two million, one hundred ninety-three thousand, six hundred eighty-seven".