216870910 has 16 divisors (see below), whose sum is σ = 407340576. Its totient is φ = 82976608.

The previous prime is 216870877. The next prime is 216870911. The reversal of 216870910 is 19078612.

It is a happy number.

216870910 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216870911) 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, 471229 + ... + 471688.

It is an arithmetic number, because the mean of its divisors is an integer number (25458786).

Almost surely, 2^216870910 is an apocalyptic number.

216870910 is a deficient number, since it is larger than the sum of its proper divisors (190469666).

216870910 is a wasteful number, since it uses less digits than its factorization.

216870910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942947.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 216870910 is about 14726.5376107217. The cubic root of 216870910 is about 600.8053167727.

The spelling of 216870910 in words is "two hundred sixteen million, eight hundred seventy thousand, nine hundred ten".