216801974 has 8 divisors (see below), whose sum is σ = 325272360. Its totient is φ = 108377856.

The previous prime is 216801971. The next prime is 216801983. The reversal of 216801974 is 479108612.

216801974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216801971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4757 + ... + 21359.

It is an arithmetic number, because the mean of its divisors is an integer number (40659045).

Almost surely, 2^216801974 is an apocalyptic number.

216801974 is a deficient number, since it is larger than the sum of its proper divisors (108470386).

216801974 is a wasteful number, since it uses less digits than its factorization.

216801974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23134.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 216801974 is about 14724.1968881158. The cubic root of 216801974 is about 600.7416513961.

The spelling of 216801974 in words is "two hundred sixteen million, eight hundred one thousand, nine hundred seventy-four".