216554894 has 8 divisors (see below), whose sum is σ = 341928840. Its totient is φ = 102578616.

The previous prime is 216554893. The next prime is 216554917. The reversal of 216554894 is 498455612.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216554893) 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, 2849369 + ... + 2849444.

It is an arithmetic number, because the mean of its divisors is an integer number (42741105).

Almost surely, 2^216554894 is an apocalyptic number.

216554894 is a deficient number, since it is larger than the sum of its proper divisors (125373946).

216554894 is a wasteful number, since it uses less digits than its factorization.

216554894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5698834.

The product of its digits is 345600, while the sum is 44.

The square root of 216554894 is about 14715.8042253898. The cubic root of 216554894 is about 600.5133513994.

The spelling of 216554894 in words is "two hundred sixteen million, five hundred fifty-four thousand, eight hundred ninety-four".