216782696 has 16 divisors (see below), whose sum is σ = 437734500. Its totient is φ = 100053504.

The previous prime is 216782653. The next prime is 216782711. The reversal of 216782696 is 696287612.

It can be written as a sum of positive squares in 2 ways, for example, as 216501796 + 280900 = 14714^2 + 530^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 216782696.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1042121 + ... + 1042328.

Almost surely, 2^216782696 is an apocalyptic number.

216782696 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

216782696 is an abundant number, since it is smaller than the sum of its proper divisors (220951804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216782696 is a wasteful number, since it uses less digits than its factorization.

216782696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2084468 (or 2084464 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The square root of 216782696 is about 14723.5422368396. The cubic root of 216782696 is about 600.7238449149.

The spelling of 216782696 in words is "two hundred sixteen million, seven hundred eighty-two thousand, six hundred ninety-six".