216678470 has 16 divisors (see below), whose sum is σ = 410549040. Its totient is φ = 82109664.

The previous prime is 216678463. The next prime is 216678479. The reversal of 216678470 is 74876612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216678479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570017 + ... + 570396.

It is an arithmetic number, because the mean of its divisors is an integer number (25659315).

Almost surely, 2^216678470 is an apocalyptic number.

216678470 is a deficient number, since it is larger than the sum of its proper divisors (193870570).

216678470 is a wasteful number, since it uses less digits than its factorization.

216678470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140439.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 216678470 is about 14720.0023777172. The cubic root of 216678470 is about 600.6275563558.

The spelling of 216678470 in words is "two hundred sixteen million, six hundred seventy-eight thousand, four hundred seventy".