6721260 has 96 divisors (see below), whose sum is σ = 23181312. Its totient is φ = 1416960.

The previous prime is 6721259. The next prime is 6721277. The reversal of 6721260 is 621276.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6721260.

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, 4845 + ... + 6075.

It is an arithmetic number, because the mean of its divisors is an integer number (241472).

Almost surely, 2^6721260 is an apocalyptic number.

6721260 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 6721260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11590656).

6721260 is an abundant number, since it is smaller than the sum of its proper divisors (16460052).

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

6721260 is a wasteful number, since it uses less digits than its factorization.

6721260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 6721260 is about 2592.5392957485. The cubic root of 6721260 is about 188.7195527105.

The spelling of 6721260 in words is "six million, seven hundred twenty-one thousand, two hundred sixty".