724081 has 8 divisors (see below), whose sum is σ = 774144. Its totient is φ = 674880.

The previous prime is 724079. The next prime is 724093. The reversal of 724081 is 180427.

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 724081 - 2¹ = 724079 is a prime.

It is a super-2 number, since 2×724081² = 1048586589122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

724081 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (724001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3136 + ... + 3358.

It is an arithmetic number, because the mean of its divisors is an integer number (96768).

2⁷²⁴⁰⁸¹ is an apocalyptic number.

It is an amenable number.

724081 is a deficient number, since it is larger than the sum of its proper divisors (50063).

724081 is a wasteful number, since it uses less digits than its factorization.

724081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 724081 is about 850.9294917912. The cubic root of 724081 is about 89.7971150010.

The spelling of 724081 in words is "seven hundred twenty-four thousand, eighty-one".