216630104 has 8 divisors (see below), whose sum is σ = 406181460. Its totient is φ = 108315048.

The previous prime is 216630103. The next prime is 216630109. The reversal of 216630104 is 401036612.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 216630104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216630103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13539374 + ... + 13539389.

Almost surely, 2^216630104 is an apocalyptic number.

It is an amenable number.

216630104 is a deficient number, since it is larger than the sum of its proper divisors (189551356).

216630104 is a wasteful number, since it uses less digits than its factorization.

216630104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27078769 (or 27078765 counting only the distinct ones).

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

The square root of 216630104 is about 14718.3594194462. The cubic root of 216630104 is about 600.5828632304.

Adding to 216630104 its reverse (401036612), we get a palindrome (617666716).

The spelling of 216630104 in words is "two hundred sixteen million, six hundred thirty thousand, one hundred four".