6729485840 has 160 divisors (see below), whose sum is σ = 19827659520. Its totient is φ = 2063001600.

The previous prime is 6729485839. The next prime is 6729485881. The reversal of 6729485840 is 485849276.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 366806 + ... + 384714.

It is an arithmetic number, because the mean of its divisors is an integer number (123922872).

Almost surely, 2^6729485840 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 6729485840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9913829760).

6729485840 is an abundant number, since it is smaller than the sum of its proper divisors (13098173680).

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

6729485840 is a wasteful number, since it uses less digits than its factorization.

6729485840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18001 (or 17995 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The square root of 6729485840 is about 82033.4434240085. The cubic root of 6729485840 is about 1887.9650970877.

The spelling of 6729485840 in words is "six billion, seven hundred twenty-nine million, four hundred eighty-five thousand, eight hundred forty".