216646802 has 4 divisors (see below), whose sum is σ = 324970206. Its totient is φ = 108323400.

The previous prime is 216646799. The next prime is 216646811. The reversal of 216646802 is 208646612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 197993041 + 18653761 = 14071^2 + 4319^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54161699 + ... + 54161702.

Almost surely, 2^216646802 is an apocalyptic number.

216646802 is a deficient number, since it is larger than the sum of its proper divisors (108323404).

216646802 is a wasteful number, since it uses less digits than its factorization.

216646802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108323403.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 216646802 is about 14718.9266592371. The cubic root of 216646802 is about 600.5982939497.

The spelling of 216646802 in words is "two hundred sixteen million, six hundred forty-six thousand, eight hundred two".