724961 has 2 divisors, whose sum is σ = 724962. Its totient is φ = 724960.

The previous prime is 724949. The next prime is 724967. The reversal of 724961 is 169427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 429025 + 295936 = 655^2 + 544^2 .

It is an emirp because it is prime and its reverse (169427) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724961 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 724961.

It is not a weakly prime, because it can be changed into another prime (724967) 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, 362480 + 362481.

It is an arithmetic number, because the mean of its divisors is an integer number (362481).

2⁷²⁴⁹⁶¹ is an apocalyptic number.

It is an amenable number.

724961 is a deficient number, since it is larger than the sum of its proper divisors (1).

724961 is an equidigital number, since it uses as much as digits as its factorization.

724961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 29.

The square root of 724961 is about 851.4464163998. The cubic root of 724961 is about 89.8334780922.

The spelling of 724961 in words is "seven hundred twenty-four thousand, nine hundred sixty-one".