6662351520 has 768 divisors, whose sum is σ = 27520819200. Its totient is φ = 1488015360.

The previous prime is 6662351491. The next prime is 6662351537. The reversal of 6662351520 is 251532666.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 42435282 + ... + 42435438.

It is an arithmetic number, because the mean of its divisors is an integer number (35834400).

Almost surely, 2^6662351520 is an apocalyptic number.

6662351520 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 6662351520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13760409600).

6662351520 is an abundant number, since it is smaller than the sum of its proper divisors (20858467680).

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

6662351520 is a wasteful number, since it uses less digits than its factorization.

6662351520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 6662351520 is about 81623.2290466384. The cubic root of 6662351520 is about 1881.6658992695.

The spelling of 6662351520 in words is "six billion, six hundred sixty-two million, three hundred fifty-one thousand, five hundred twenty".