216974485 has 32 divisors (see below), whose sum is σ = 339316992. Its totient is φ = 129254400.

The previous prime is 216974441. The next prime is 216974507. The reversal of 216974485 is 584479612.

It is not a de Polignac number, because 216974485 - 2¹⁵ = 216941717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6291 + ... + 21760.

It is an arithmetic number, because the mean of its divisors is an integer number (10603656).

Almost surely, 2^216974485 is an apocalyptic number.

It is an amenable number.

216974485 is a deficient number, since it is larger than the sum of its proper divisors (122342507).

216974485 is a wasteful number, since it uses less digits than its factorization.

216974485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28093.

The product of its digits is 483840, while the sum is 46.

The square root of 216974485 is about 14730.0538016668. The cubic root of 216974485 is about 600.9009474051.

The spelling of 216974485 in words is "two hundred sixteen million, nine hundred seventy-four thousand, four hundred eighty-five".