6660600 has 96 divisors (see below), whose sum is σ = 21895920. Its totient is φ = 1669120.

The previous prime is 6660587. The next prime is 6660601. The reversal of 6660600 is 60666.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9874 + ... + 10526.

Almost surely, 2^6660600 is an apocalyptic number.

6660600 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6660600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10947960).

6660600 is an abundant number, since it is smaller than the sum of its proper divisors (15235320).

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

6660600 is a wasteful number, since it uses less digits than its factorization.

6660600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 6660600 is about 2580.8138251335. The cubic root of 6660600 is about 188.1500989312.

It can be divided in two parts, 6660 and 600, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 6660600 in words is "six million, six hundred sixty thousand, six hundred".