216216674 has 8 divisors (see below), whose sum is σ = 324468588. Its totient is φ = 108060480.

The previous prime is 216216667. The next prime is 216216677. The reversal of 216216674 is 476612612.

It can be written as a sum of positive squares in 2 ways, for example, as 186131449 + 30085225 = 13643^2 + 5485^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (216216677) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 17987 + ... + 27494.

Almost surely, 2^216216674 is an apocalyptic number.

216216674 is a deficient number, since it is larger than the sum of its proper divisors (108251914).

216216674 is a wasteful number, since it uses less digits than its factorization.

216216674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47860.

The product of its digits is 24192, while the sum is 35.

The square root of 216216674 is about 14704.3080081995. The cubic root of 216216674 is about 600.2005570281.

The spelling of 216216674 in words is "two hundred sixteen million, two hundred sixteen thousand, six hundred seventy-four".