6616561230 has 48 divisors (see below), whose sum is σ = 17234637264. Its totient is φ = 1761177600.

The previous prime is 6616561201. The next prime is 6616561243. The reversal of 6616561230 is 321656166.

6616561230 is a `hidden beast` number, since 6 + 6 + 1 + 6 + 5 + 612 + 30 = 666.

It is a super-2 number, since 2×6616561230² = 87557765020678225800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17971 + ... + 116430.

It is an arithmetic number, because the mean of its divisors is an integer number (359054943).

Almost surely, 2^6616561230 is an apocalyptic number.

6616561230 is an abundant number, since it is smaller than the sum of its proper divisors (10618076034).

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

6616561230 is a wasteful number, since it uses less digits than its factorization.

6616561230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134961 (or 134958 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 6616561230 is about 81342.2475101346. The cubic root of 6616561230 is about 1877.3450934634.

The spelling of 6616561230 in words is "six billion, six hundred sixteen million, five hundred sixty-one thousand, two hundred thirty".