724779 has 12 divisors (see below), whose sum is σ = 1142232. Its totient is φ = 439200.

The previous prime is 724777. The next prime is 724781. The reversal of 724779 is 977427.

It is an interprime number because it is at equal distance from previous prime (724777) and next prime (724781).

It is not a de Polignac number, because 724779 - 2¹ = 724777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (724777) 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 11 ways as a sum of consecutive naturals, for example, 3562 + ... + 3759.

It is an arithmetic number, because the mean of its divisors is an integer number (95186).

2⁷²⁴⁷⁷⁹ is an apocalyptic number.

724779 is a deficient number, since it is larger than the sum of its proper divisors (417453).

724779 is a wasteful number, since it uses less digits than its factorization.

724779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7338 (or 7335 counting only the distinct ones).

The product of its digits is 24696, while the sum is 36.

The square root of 724779 is about 851.3395327365. The cubic root of 724779 is about 89.8259599584.

It can be divided in two parts, 72 and 4779, that added together give a triangular number (4851 = T₉₈).

The spelling of 724779 in words is "seven hundred twenty-four thousand, seven hundred seventy-nine".