216898970 has 32 divisors (see below), whose sum is σ = 409546368. Its totient is φ = 82548928.

The previous prime is 216898961. The next prime is 216898973. The reversal of 216898970 is 79898612.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (216898973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42917 + ... + 47703.

It is an arithmetic number, because the mean of its divisors is an integer number (12798324).

Almost surely, 2^216898970 is an apocalyptic number.

216898970 is a deficient number, since it is larger than the sum of its proper divisors (192647398).

216898970 is a wasteful number, since it uses less digits than its factorization.

216898970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5014.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 216898970 is about 14727.4902817826. The cubic root of 216898970 is about 600.8312275325.

The spelling of 216898970 in words is "two hundred sixteen million, eight hundred ninety-eight thousand, nine hundred seventy".