10800721 has 8 divisors (see below), whose sum is σ = 11556800. Its totient is φ = 10063440.

The previous prime is 10800709. The next prime is 10800737. The reversal of 10800721 is 12700801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10800721 - 2¹⁷ = 10669649 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10800761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3501 + ... + 5818.

It is an arithmetic number, because the mean of its divisors is an integer number (1444600).

Almost surely, 2^10800721 is an apocalyptic number.

It is an amenable number.

10800721 is a deficient number, since it is larger than the sum of its proper divisors (756079).

10800721 is an equidigital number, since it uses as much as digits as its factorization.

10800721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9399.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 10800721 is about 3286.4450398569. The cubic root of 10800721 is about 221.0468086732.

The spelling of 10800721 in words is "ten million, eight hundred thousand, seven hundred twenty-one".