724554 has 12 divisors (see below), whose sum is σ = 1569906. Its totient is φ = 241512.

The previous prime is 724553. The next prime is 724567. The reversal of 724554 is 455427.

It can be written as a sum of positive squares in only one way, i.e., 497025 + 227529 = 705^2 + 477^2 .

It is not an unprimeable number, because it can be changed into a prime (724553) 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, 20109 + ... + 20144.

2⁷²⁴⁵⁵⁴ is an apocalyptic number.

724554 is an abundant number, since it is smaller than the sum of its proper divisors (845352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

724554 is a wasteful number, since it uses less digits than its factorization.

724554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40261 (or 40258 counting only the distinct ones).

The product of its digits is 5600, while the sum is 27.

The square root of 724554 is about 851.2073777876. The cubic root of 724554 is about 89.8166638223.

The spelling of 724554 in words is "seven hundred twenty-four thousand, five hundred fifty-four".