6861589280 has 144 divisors (see below), whose sum is σ = 20061566784. Its totient is φ = 2171520000.

The previous prime is 6861589253. The next prime is 6861589303. The reversal of 6861589280 is 829851686.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171155 + ... + 207405.

It is an arithmetic number, because the mean of its divisors is an integer number (139316436).

Almost surely, 2^6861589280 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 6861589280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10030783392).

6861589280 is an abundant number, since it is smaller than the sum of its proper divisors (13199977504).

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

6861589280 is a wasteful number, since it uses less digits than its factorization.

6861589280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36299 (or 36278 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 53.

The square root of 6861589280 is about 82834.7105988788. The cubic root of 6861589280 is about 1900.2390539473.

The spelling of 6861589280 in words is "six billion, eight hundred sixty-one million, five hundred eighty-nine thousand, two hundred eighty".