6606900720 has 240 divisors, whose sum is σ = 25977212352. Its totient is φ = 1473269760.

The previous prime is 6606900709. The next prime is 6606900731. The reversal of 6606900720 is 270096066.

It is an interprime number because it is at equal distance from previous prime (6606900709) and next prime (6606900731).

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×6606900720² = 87302274247873036800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 190654 + ... + 222626.

Almost surely, 2^6606900720 is an apocalyptic number.

6606900720 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 6606900720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12988606176).

6606900720 is an abundant number, since it is smaller than the sum of its proper divisors (19370311632).

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

6606900720 is a wasteful number, since it uses less digits than its factorization.

6606900720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32040 (or 32031 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 6606900720 is about 81282.8439463089. The cubic root of 6606900720 is about 1876.4309758864.

Adding to 6606900720 its reverse (270096066), we get a palindrome (6876996786).

The spelling of 6606900720 in words is "six billion, six hundred six million, nine hundred thousand, seven hundred twenty".