724605 has 32 divisors (see below), whose sum is σ = 1357824. Its totient is φ = 323136.

The previous prime is 724601. The next prime is 724609. The reversal of 724605 is 506427.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (724601) and next prime (724609).

It is not a de Polignac number, because 724605 - 2² = 724601 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6984 + ... + 7086.

It is an arithmetic number, because the mean of its divisors is an integer number (42432).

2⁷²⁴⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

724605 is a deficient number, since it is larger than the sum of its proper divisors (633219).

724605 is a wasteful number, since it uses less digits than its factorization.

724605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 724605 is about 851.2373347075. The cubic root of 724605 is about 89.8187711151.

The spelling of 724605 in words is "seven hundred twenty-four thousand, six hundred five".