216654804 has 48 divisors (see below), whose sum is σ = 562632000. Its totient is φ = 72098208.

The previous prime is 216654803. The next prime is 216654829. The reversal of 216654804 is 408456612.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216654803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83722 + ... + 86270.

It is an arithmetic number, because the mean of its divisors is an integer number (11721500).

Almost surely, 2^216654804 is an apocalyptic number.

It is an amenable number.

216654804 is an abundant number, since it is smaller than the sum of its proper divisors (345977196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216654804 is a wasteful number, since it uses less digits than its factorization.

216654804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349 (or 3341 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 216654804 is about 14719.1984836132. The cubic root of 216654804 is about 600.6056883636.

The spelling of 216654804 in words is "two hundred sixteen million, six hundred fifty-four thousand, eight hundred four".