6006659640 has 256 divisors, whose sum is σ = 19573125120. Its totient is φ = 1469153280.

The previous prime is 6006659611. The next prime is 6006659651. The reversal of 6006659640 is 469566006.

It is a junction number, because it is equal to n+sod(n) for n = 6006659592 and 6006659601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16366737 + ... + 16367103.

It is an arithmetic number, because the mean of its divisors is an integer number (76457520).

Almost surely, 2^6006659640 is an apocalyptic number.

6006659640 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 6006659640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9786562560).

6006659640 is an abundant number, since it is smaller than the sum of its proper divisors (13566465480).

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

6006659640 is a wasteful number, since it uses less digits than its factorization.

6006659640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 6006659640 is about 77502.6427936493. The cubic root of 6006659640 is about 1817.7926425254.

The spelling of 6006659640 in words is "six billion, six million, six hundred fifty-nine thousand, six hundred forty".