216872593 has 8 divisors (see below), whose sum is σ = 260899520. Its totient is φ = 176106960.

The previous prime is 216872573. The next prime is 216872599. The reversal of 216872593 is 395278612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216872593 - 2²¹ = 214775441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216872599) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 815178 + ... + 815443.

It is an arithmetic number, because the mean of its divisors is an integer number (32612440).

Almost surely, 2^216872593 is an apocalyptic number.

It is an amenable number.

216872593 is a deficient number, since it is larger than the sum of its proper divisors (44026927).

216872593 is a wasteful number, since it uses less digits than its factorization.

216872593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630647.

The product of its digits is 181440, while the sum is 43.

The square root of 216872593 is about 14726.5947523520. The cubic root of 216872593 is about 600.8068709273.

The spelling of 216872593 in words is "two hundred sixteen million, eight hundred seventy-two thousand, five hundred ninety-three".