724949 has 2 divisors, whose sum is σ = 724950. Its totient is φ = 724948.

The previous prime is 724939. The next prime is 724961. The reversal of 724949 is 949427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 628849 + 96100 = 793^2 + 310^2 .

It is an emirp because it is prime and its reverse (949427) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724949 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (724939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362474 + 362475.

It is an arithmetic number, because the mean of its divisors is an integer number (362475).

2⁷²⁴⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

724949 is a deficient number, since it is larger than the sum of its proper divisors (1).

724949 is an equidigital number, since it uses as much as digits as its factorization.

724949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 724949 is about 851.4393695384. The cubic root of 724949 is about 89.8329824298.

The spelling of 724949 in words is "seven hundred twenty-four thousand, nine hundred forty-nine".