216656002 has 4 divisors (see below), whose sum is σ = 324984006. Its totient is φ = 108328000.

The previous prime is 216655991. The next prime is 216656017. The reversal of 216656002 is 200656612.

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., 176066361 + 40589641 = 13269^2 + 6371^2 .

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, 54163999 + ... + 54164002.

Almost surely, 2^216656002 is an apocalyptic number.

216656002 is a deficient number, since it is larger than the sum of its proper divisors (108328004).

216656002 is a wasteful number, since it uses less digits than its factorization.

216656002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108328003.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 216656002 is about 14719.2391787076. The cubic root of 216656002 is about 600.6067953847.

The spelling of 216656002 in words is "two hundred sixteen million, six hundred fifty-six thousand, two".