724837 has 2 divisors, whose sum is σ = 724838. Its totient is φ = 724836.

The previous prime is 724813. The next prime is 724847. The reversal of 724837 is 738427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 638401 + 86436 = 799^2 + 294^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724837 is a prime.

724837 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 724799 and 724808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (724807) 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 as a sum of consecutive naturals, namely, 362418 + 362419.

It is an arithmetic number, because the mean of its divisors is an integer number (362419).

2⁷²⁴⁸³⁷ is an apocalyptic number.

It is an amenable number.

724837 is a deficient number, since it is larger than the sum of its proper divisors (1).

724837 is an equidigital number, since it uses as much as digits as its factorization.

724837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 31.

The square root of 724837 is about 851.3735960200. The cubic root of 724837 is about 89.8283559838.

The spelling of 724837 in words is "seven hundred twenty-four thousand, eight hundred thirty-seven".