6616090040 has 64 divisors (see below), whose sum is σ = 17021188800. Its totient is φ = 2267255808.

The previous prime is 6616089989. The next prime is 6616090043. The reversal of 6616090040 is 400906166.

It is a junction number, because it is equal to n+sod(n) for n = 6616089979 and 6616090006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6616090043) 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, 728246 + ... + 737274.

It is an arithmetic number, because the mean of its divisors is an integer number (265956075).

Almost surely, 2^6616090040 is an apocalyptic number.

It is an amenable number.

6616090040 is an abundant number, since it is smaller than the sum of its proper divisors (10405098760).

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

6616090040 is a wasteful number, since it uses less digits than its factorization.

6616090040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11664 (or 11660 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 6616090040 is about 81339.3511161725. The cubic root of 6616090040 is about 1877.3005281571.

The spelling of 6616090040 in words is "six billion, six hundred sixteen million, ninety thousand, forty".