6665622480 has 480 divisors, whose sum is σ = 26707719168. Its totient is φ = 1470873600.

The previous prime is 6665622461. The next prime is 6665622487. The reversal of 6665622480 is 842265666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6665622487) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4173042 + ... + 4174638.

Almost surely, 2^6665622480 is an apocalyptic number.

6665622480 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 6665622480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13353859584).

6665622480 is an abundant number, since it is smaller than the sum of its proper divisors (20042096688).

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

6665622480 is a wasteful number, since it uses less digits than its factorization.

6665622480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675 (or 1666 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The square root of 6665622480 is about 81643.2635310471. The cubic root of 6665622480 is about 1881.9737909040.

The spelling of 6665622480 in words is "six billion, six hundred sixty-five million, six hundred twenty-two thousand, four hundred eighty".