216613004 has 12 divisors (see below), whose sum is σ = 388318728. Its totient is φ = 105664800.

The previous prime is 216613003. The next prime is 216613039. The reversal of 216613004 is 400316612.

It is a happy number.

216613004 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (216613003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 660242 + ... + 660569.

It is an arithmetic number, because the mean of its divisors is an integer number (32359894).

Almost surely, 2^216613004 is an apocalyptic number.

It is an amenable number.

216613004 is a deficient number, since it is larger than the sum of its proper divisors (171705724).

216613004 is a wasteful number, since it uses less digits than its factorization.

216613004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320856 (or 1320854 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 216613004 is about 14717.7785008472. The cubic root of 216613004 is about 600.5670601987.

Adding to 216613004 its reverse (400316612), we get a palindrome (616929616).

The spelling of 216613004 in words is "two hundred sixteen million, six hundred thirteen thousand, four".