2196387 has 6 divisors (see below), whose sum is σ = 3172572. Its totient is φ = 1464252.

The previous prime is 2196377. The next prime is 2196401. The reversal of 2196387 is 7836912.

2196387 is a `hidden beast` number, since 2 + 19 + 638 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-2196387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2196307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122013 + ... + 122030.

It is an arithmetic number, because the mean of its divisors is an integer number (528762).

2^2196387 is an apocalyptic number.

2196387 is a deficient number, since it is larger than the sum of its proper divisors (976185).

2196387 is a wasteful number, since it uses less digits than its factorization.

2196387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244049 (or 244046 counting only the distinct ones).

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

The square root of 2196387 is about 1482.0212549083. The cubic root of 2196387 is about 129.9879081455.

The spelling of 2196387 in words is "two million, one hundred ninety-six thousand, three hundred eighty-seven".