216500870 has 8 divisors (see below), whose sum is σ = 389701584. Its totient is φ = 86600344.

The previous prime is 216500857. The next prime is 216500891. The reversal of 216500870 is 78005612.

216500870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10825034 + ... + 10825053.

It is an arithmetic number, because the mean of its divisors is an integer number (48712698).

Almost surely, 2^216500870 is an apocalyptic number.

216500870 is a deficient number, since it is larger than the sum of its proper divisors (173200714).

216500870 is a wasteful number, since it uses less digits than its factorization.

216500870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21650094.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 216500870 is about 14713.9685333359. The cubic root of 216500870 is about 600.4634105109.

The spelling of 216500870 in words is "two hundred sixteen million, five hundred thousand, eight hundred seventy".