6642958080 has 648 divisors, whose sum is σ = 25572573936. Its totient is φ = 1463418880.

The previous prime is 6642958079. The next prime is 6642958103. The reversal of 6642958080 is 808592466.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 229067506 + ... + 229067534.

Almost surely, 2^6642958080 is an apocalyptic number.

6642958080 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 6642958080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12786286968).

6642958080 is an abundant number, since it is smaller than the sum of its proper divisors (18929615856).

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

6642958080 is a wasteful number, since it uses less digits than its factorization.

6642958080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The square root of 6642958080 is about 81504.3439333144. The cubic root of 6642958080 is about 1879.8383443316.

The spelling of 6642958080 in words is "six billion, six hundred forty-two million, nine hundred fifty-eight thousand, eighty".