6880515640 has 64 divisors (see below), whose sum is σ = 16032556800. Its totient is φ = 2654389248.

The previous prime is 6880515637. The next prime is 6880515643. The reversal of 6880515640 is 465150886.

It is an interprime number because it is at equal distance from previous prime (6880515637) and next prime (6880515643).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6880515643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1269817 + ... + 1275223.

It is an arithmetic number, because the mean of its divisors is an integer number (250508700).

Almost surely, 2^6880515640 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 6880515640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8016278400).

6880515640 is an abundant number, since it is smaller than the sum of its proper divisors (9152041160).

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

6880515640 is a wasteful number, since it uses less digits than its factorization.

6880515640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6544 (or 6540 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 6880515640 is about 82948.8736511835. The cubic root of 6880515640 is about 1901.9845966784.

The spelling of 6880515640 in words is "six billion, eight hundred eighty million, five hundred fifteen thousand, six hundred forty".