724751 has 2 divisors, whose sum is σ = 724752. Its totient is φ = 724750.

The previous prime is 724747. The next prime is 724769. The reversal of 724751 is 157427.

It is a weak prime.

It is an emirp because it is prime and its reverse (157427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 724751 - 2² = 724747 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 724751.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 724751.

It is not a weakly prime, because it can be changed into another prime (724721) 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, 362375 + 362376.

It is an arithmetic number, because the mean of its divisors is an integer number (362376).

2⁷²⁴⁷⁵¹ is an apocalyptic number.

724751 is a deficient number, since it is larger than the sum of its proper divisors (1).

724751 is an equidigital number, since it uses as much as digits as its factorization.

724751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1960, while the sum is 26.

The square root of 724751 is about 851.3230879049. The cubic root of 724751 is about 89.8248032107.

The spelling of 724751 in words is "seven hundred twenty-four thousand, seven hundred fifty-one".