216674516 has 24 divisors (see below), whose sum is σ = 395258976. Its totient is φ = 103831200.

The previous prime is 216674489. The next prime is 216674539. The reversal of 216674516 is 615476612.

It is a self number, because there is not a number n which added to its sum of digits gives 216674516.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 1010 + ... + 20841.

It is an arithmetic number, because the mean of its divisors is an integer number (16469124).

Almost surely, 2^216674516 is an apocalyptic number.

It is an amenable number.

216674516 is a deficient number, since it is larger than the sum of its proper divisors (178584460).

216674516 is a wasteful number, since it uses less digits than its factorization.

216674516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21959 (or 21957 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 216674516 is about 14719.8680700610. The cubic root of 216674516 is about 600.6239028690.

The spelling of 216674516 in words is "two hundred sixteen million, six hundred seventy-four thousand, five hundred sixteen".