6664617080 has 288 divisors, whose sum is σ = 18269571600. Its totient is φ = 2180090880.

The previous prime is 6664617059. The next prime is 6664617097. The reversal of 6664617080 is 807164666.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 48646772 + ... + 48646908.

Almost surely, 2^6664617080 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 6664617080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9134785800).

6664617080 is an abundant number, since it is smaller than the sum of its proper divisors (11604954520).

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

6664617080 is a wasteful number, since it uses less digits than its factorization.

6664617080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 6664617080 is about 81637.1060241604. The cubic root of 6664617080 is about 1881.8791645034.

The spelling of 6664617080 in words is "six billion, six hundred sixty-four million, six hundred seventeen thousand, eighty".