216699795 has 24 divisors (see below), whose sum is σ = 404507376. Its totient is φ = 106682688.

The previous prime is 216699793. The next prime is 216699809. The reversal of 216699795 is 597996612.

It is not a de Polignac number, because 216699795 - 2¹ = 216699793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216699793) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184629 + ... + 185798.

It is an arithmetic number, because the mean of its divisors is an integer number (16854474).

Almost surely, 2^216699795 is an apocalyptic number.

216699795 is a deficient number, since it is larger than the sum of its proper divisors (187807581).

216699795 is a wasteful number, since it uses less digits than its factorization.

216699795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370451 (or 370448 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 54.

The square root of 216699795 is about 14720.7267143983. The cubic root of 216699795 is about 600.6472598401.

The spelling of 216699795 in words is "two hundred sixteen million, six hundred ninety-nine thousand, seven hundred ninety-five".