6616988 has 36 divisors (see below), whose sum is σ = 13754832. Its totient is φ = 2728320.

The previous prime is 6616931. The next prime is 6616991. The reversal of 6616988 is 8896166.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23408 + ... + 23688.

Almost surely, 2^6616988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6616988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6877416).

6616988 is an abundant number, since it is smaller than the sum of its proper divisors (7137844).

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

6616988 is a wasteful number, since it uses less digits than its factorization.

6616988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 319 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 6616988 is about 2572.3506759383. The cubic root of 6616988 is about 187.7385455685.

The spelling of 6616988 in words is "six million, six hundred sixteen thousand, nine hundred eighty-eight".