6616890 has 96 divisors (see below), whose sum is σ = 20442240. Its totient is φ = 1508544.

The previous prime is 6616879. The next prime is 6616931. The reversal of 6616890 is 986166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16816 + ... + 17204.

It is an arithmetic number, because the mean of its divisors is an integer number (212940).

Almost surely, 2^6616890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6616890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10221120).

6616890 is an abundant number, since it is smaller than the sum of its proper divisors (13825350).

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

6616890 is a wasteful number, since it uses less digits than its factorization.

6616890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 6616890 is about 2572.3316271430. The cubic root of 6616890 is about 187.7376187386.

The spelling of 6616890 in words is "six million, six hundred sixteen thousand, eight hundred ninety".