724427 has 6 divisors (see below), whose sum is σ = 796404. Its totient is φ = 658460.

The previous prime is 724403. The next prime is 724433.

724427 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-724427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 724396 and 724405.

It is not an unprimeable number, because it can be changed into a prime (724447) 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 5 ways as a sum of consecutive naturals, for example, 2873 + ... + 3114.

It is an arithmetic number, because the mean of its divisors is an integer number (132734).

2⁷²⁴⁴²⁷ is an apocalyptic number.

724427 is a deficient number, since it is larger than the sum of its proper divisors (71977).

724427 is a wasteful number, since it uses less digits than its factorization.

724427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6009 (or 5998 counting only the distinct ones).

The product of its digits is 3136, while the sum is 26.

The square root of 724427 is about 851.1327746010. The cubic root of 724427 is about 89.8114158201.

The spelling of 724427 in words is "seven hundred twenty-four thousand, four hundred twenty-seven", and thus it is an iban number.