6612805816 has 32 divisors (see below), whose sum is σ = 12504286080. Its totient is φ = 3278412000.

The previous prime is 6612805777. The next prime is 6612805817. The reversal of 6612805816 is 6185082166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6612805817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684975 + ... + 694561.

It is an arithmetic number, because the mean of its divisors is an integer number (390758940).

Almost surely, 2^6612805816 is an apocalyptic number.

It is an amenable number.

6612805816 is a deficient number, since it is larger than the sum of its proper divisors (5891480264).

6612805816 is a wasteful number, since it uses less digits than its factorization.

6612805816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10315 (or 10311 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 6612805816 is about 81319.1602022549. The cubic root of 6612805816 is about 1876.9898463761.

The spelling of 6612805816 in words is "six billion, six hundred twelve million, eight hundred five thousand, eight hundred sixteen".