6889285440 has 224 divisors, whose sum is σ = 24359616000. Its totient is φ = 1832933376.

The previous prime is 6889285433. The next prime is 6889285453. The reversal of 6889285440 is 445829886.

6889285440 is a `hidden beast` number, since 6 + 8 + 8 + 92 + 8 + 544 + 0 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6211606 + ... + 6212714.

Almost surely, 2^6889285440 is an apocalyptic number.

6889285440 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 6889285440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12179808000).

6889285440 is an abundant number, since it is smaller than the sum of its proper divisors (17470330560).

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

6889285440 is a wasteful number, since it uses less digits than its factorization.

6889285440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854 (or 1838 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 54.

The square root of 6889285440 is about 83001.7195002610. The cubic root of 6889285440 is about 1902.7923337580.

The spelling of 6889285440 in words is "six billion, eight hundred eighty-nine million, two hundred eighty-five thousand, four hundred forty".