6616948885 has 8 divisors (see below), whose sum is σ = 7940822616. Its totient is φ = 5293236480.

The previous prime is 6616948861. The next prime is 6616948903. The reversal of 6616948885 is 5888496166.

It can be written as a sum of positive squares in 4 ways, for example, as 45252529 + 6571696356 = 6727^2 + 81066^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6616948885 - 2³¹ = 4469465237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85737 + ... + 143473.

It is an arithmetic number, because the mean of its divisors is an integer number (992602827).

Almost surely, 2^6616948885 is an apocalyptic number.

It is an amenable number.

6616948885 is a deficient number, since it is larger than the sum of its proper divisors (1323873731).

6616948885 is a wasteful number, since it uses less digits than its factorization.

6616948885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80663.

The product of its digits is 19906560, while the sum is 61.

The square root of 6616948885 is about 81344.6303390703. The cubic root of 6616948885 is about 1877.3817564154.

The spelling of 6616948885 in words is "six billion, six hundred sixteen million, nine hundred forty-eight thousand, eight hundred eighty-five".