216779295 has 16 divisors (see below), whose sum is σ = 347034240. Its totient is φ = 115553184.

The previous prime is 216779293. The next prime is 216779333. The reversal of 216779295 is 592977612.

It is not a de Polignac number, because 216779295 - 2¹ = 216779293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216779293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42892 + ... + 47678.

It is an arithmetic number, because the mean of its divisors is an integer number (21689640).

Almost surely, 2^216779295 is an apocalyptic number.

216779295 is a deficient number, since it is larger than the sum of its proper divisors (130254945).

216779295 is a wasteful number, since it uses less digits than its factorization.

216779295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7814.

The product of its digits is 476280, while the sum is 48.

The square root of 216779295 is about 14723.4267410817. The cubic root of 216779295 is about 600.7207034088.

The spelling of 216779295 in words is "two hundred sixteen million, seven hundred seventy-nine thousand, two hundred ninety-five".