6662880 has 144 divisors (see below), whose sum is σ = 26024544. Its totient is φ = 1520640.

The previous prime is 6662879. The next prime is 6662881. The reversal of 6662880 is 882666.

It is an interprime number because it is at equal distance from previous prime (6662879) and next prime (6662881).

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6662881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9750 + ... + 10410.

It is an arithmetic number, because the mean of its divisors is an integer number (180726).

Almost surely, 2^6662880 is an apocalyptic number.

6662880 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 6662880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13012272).

6662880 is an abundant number, since it is smaller than the sum of its proper divisors (19361664).

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

6662880 is a wasteful number, since it uses less digits than its factorization.

6662880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 6662880 is about 2581.2555084687. The cubic root of 6662880 is about 188.1715651298.

The spelling of 6662880 in words is "six million, six hundred sixty-two thousand, eight hundred eighty".