6896280640 has 56 divisors (see below), whose sum is σ = 16481264472. Its totient is φ = 2748518400.

The previous prime is 6896280637. The next prime is 6896280653. The reversal of 6896280640 is 460826986.

It can be written as a sum of positive squares in 4 ways, for example, as 186704896 + 6709575744 = 13664^2 + 81912^2 .

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 7 ways as a sum of consecutive naturals, for example, 49740 + ... + 127540.

Almost surely, 2^6896280640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6896280640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8240632236).

6896280640 is an abundant number, since it is smaller than the sum of its proper divisors (9584983832).

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

6896280640 is a wasteful number, since it uses less digits than its factorization.

6896280640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78095 (or 78085 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 49.

The square root of 6896280640 is about 83043.8476950581. The cubic root of 6896280640 is about 1903.4361310755.

The spelling of 6896280640 in words is "six billion, eight hundred ninety-six million, two hundred eighty thousand, six hundred forty".