724140745 has 8 divisors (see below), whose sum is σ = 874801800. Its totient is φ = 575424000.

The previous prime is 724140731. The next prime is 724140751. The reversal of 724140745 is 547041427.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 37491129 + 686649616 = 6123^2 + 26204^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 724140745 - 2⁷ = 724140617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 724140745.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485256 + ... + 486745.

It is an arithmetic number, because the mean of its divisors is an integer number (109350225).

Almost surely, 2^724140745 is an apocalyptic number.

It is an amenable number.

724140745 is a deficient number, since it is larger than the sum of its proper divisors (150661055).

724140745 is a wasteful number, since it uses less digits than its factorization.

724140745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972155.

The product of its (nonzero) digits is 31360, while the sum is 34.

The square root of 724140745 is about 26909.8633404185. The cubic root of 724140745 is about 897.9958469756.

The spelling of 724140745 in words is "seven hundred twenty-four million, one hundred forty thousand, seven hundred forty-five".