6662988 has 36 divisors (see below), whose sum is σ = 17133480. Its totient is φ = 2182656.

The previous prime is 6662987. The next prime is 6662989. The reversal of 6662988 is 8892666.

It is an interprime number because it is at equal distance from previous prime (6662987) and next prime (6662989).

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (6662987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 556 + ... + 3692.

It is an arithmetic number, because the mean of its divisors is an integer number (475930).

Almost surely, 2^6662988 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 6662988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8566740).

6662988 is an abundant number, since it is smaller than the sum of its proper divisors (10470492).

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

6662988 is a wasteful number, since it uses less digits than its factorization.

6662988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206 (or 3201 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 6662988 is about 2581.2764284361. The cubic root of 6662988 is about 188.1725818282.

The spelling of 6662988 in words is "six million, six hundred sixty-two thousand, nine hundred eighty-eight".