6266665440 has 480 divisors, whose sum is σ = 25677679104. Its totient is φ = 1409633280.

The previous prime is 6266665421. The next prime is 6266665499. The reversal of 6266665440 is 445666626.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (45).

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 79 ways as a sum of consecutive naturals, for example, 6077725 + ... + 6078755.

Almost surely, 2^6266665440 is an apocalyptic number.

6266665440 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 6266665440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12838839552).

6266665440 is an abundant number, since it is smaller than the sum of its proper divisors (19411013664).

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

6266665440 is a wasteful number, since it uses less digits than its factorization.

6266665440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132 (or 1115 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The square root of 6266665440 is about 79162.2728324547. The cubic root of 6266665440 is about 1843.6515230904.

The spelling of 6266665440 in words is "six billion, two hundred sixty-six million, six hundred sixty-five thousand, four hundred forty".