2166874587 has 24 divisors (see below), whose sum is σ = 3321695520. Its totient is φ = 1356468480.

The previous prime is 2166874571. The next prime is 2166874601. The reversal of 2166874587 is 7854786612.

2166874587 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2166874587 - 2⁴ = 2166874571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2166874517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51037 + ... + 83297.

It is an arithmetic number, because the mean of its divisors is an integer number (138403980).

Almost surely, 2^2166874587 is an apocalyptic number.

2166874587 is a deficient number, since it is larger than the sum of its proper divisors (1154820933).

2166874587 is a wasteful number, since it uses less digits than its factorization.

2166874587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32723 (or 32720 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The square root of 2166874587 is about 46549.7001816338. The cubic root of 2166874587 is about 1294.0307365848.

The spelling of 2166874587 in words is "two billion, one hundred sixty-six million, eight hundred seventy-four thousand, five hundred eighty-seven".