216866954 has 8 divisors (see below), whose sum is σ = 339444000. Its totient is φ = 103718956.

The previous prime is 216866921. The next prime is 216867029. The reversal of 216866954 is 459668612.

216866954 is digitally balanced in base 3, 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 junction number, because it is equal to n+sod(n) for n = 216866899 and 216866908.

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, 2357204 + ... + 2357295.

It is an arithmetic number, because the mean of its divisors is an integer number (42430500).

Almost surely, 2^216866954 is an apocalyptic number.

216866954 is a deficient number, since it is larger than the sum of its proper divisors (122577046).

216866954 is a wasteful number, since it uses less digits than its factorization.

216866954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4714524.

The product of its digits is 622080, while the sum is 47.

The square root of 216866954 is about 14726.4032947628. The cubic root of 216866954 is about 600.8016636006.

The spelling of 216866954 in words is "two hundred sixteen million, eight hundred sixty-six thousand, nine hundred fifty-four".