216970898 has 8 divisors (see below), whose sum is σ = 344600892. Its totient is φ = 102103936.

The previous prime is 216970879. The next prime is 216970939. The reversal of 216970898 is 898079612.

It can be written as a sum of positive squares in 2 ways, for example, as 208426969 + 8543929 = 14437^2 + 2923^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3190715 + ... + 3190782.

Almost surely, 2^216970898 is an apocalyptic number.

216970898 is a deficient number, since it is larger than the sum of its proper divisors (127629994).

216970898 is a wasteful number, since it uses less digits than its factorization.

216970898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6381516.

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

The square root of 216970898 is about 14729.9320432920. The cubic root of 216970898 is about 600.8976360425.

The spelling of 216970898 in words is "two hundred sixteen million, nine hundred seventy thousand, eight hundred ninety-eight".