724617 has 6 divisors (see below), whose sum is σ = 1046682. Its totient is φ = 483072.

The previous prime is 724609. The next prime is 724621. The reversal of 724617 is 716427.

It can be written as a sum of positive squares in only one way, i.e., 389376 + 335241 = 624^2 + 579^2 .

It is not a de Polignac number, because 724617 - 2³ = 724609 is a prime.

724617 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (724627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40248 + ... + 40265.

It is an arithmetic number, because the mean of its divisors is an integer number (174447).

2⁷²⁴⁶¹⁷ is an apocalyptic number.

It is an amenable number.

724617 is a deficient number, since it is larger than the sum of its proper divisors (322065).

724617 is a wasteful number, since it uses less digits than its factorization.

724617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80519 (or 80516 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 724617 is about 851.2443832414. The cubic root of 724617 is about 89.8192669343.

The spelling of 724617 in words is "seven hundred twenty-four thousand, six hundred seventeen".