216471795 has 16 divisors (see below), whose sum is σ = 366729120. Its totient is φ = 108660224.

The previous prime is 216471751. The next prime is 216471799. The reversal of 216471795 is 597174612.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 216471795 - 2⁸ = 216471539 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (216471799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424200 + ... + 424709.

It is an arithmetic number, because the mean of its divisors is an integer number (22920570).

Almost surely, 2^216471795 is an apocalyptic number.

216471795 is a deficient number, since it is larger than the sum of its proper divisors (150257325).

216471795 is a wasteful number, since it uses less digits than its factorization.

216471795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848934.

The product of its digits is 105840, while the sum is 42.

The square root of 216471795 is about 14712.9804934282. The cubic root of 216471795 is about 600.4365295485.

The spelling of 216471795 in words is "two hundred sixteen million, four hundred seventy-one thousand, seven hundred ninety-five".