724936 has 8 divisors (see below), whose sum is σ = 1359270. Its totient is φ = 362464.

The previous prime is 724903. The next prime is 724939. The reversal of 724936 is 639427.

724936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 372100 + 352836 = 610^2 + 594^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 724898 and 724907.

It is not an unprimeable number, because it can be changed into a prime (724939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45301 + ... + 45316.

2⁷²⁴⁹³⁶ is an apocalyptic number.

It is an amenable number.

724936 is a deficient number, since it is larger than the sum of its proper divisors (634334).

724936 is a wasteful number, since it uses less digits than its factorization.

724936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90623 (or 90619 counting only the distinct ones).

The product of its digits is 9072, while the sum is 31.

The square root of 724936 is about 851.4317353728. The cubic root of 724936 is about 89.8324454561.

The spelling of 724936 in words is "seven hundred twenty-four thousand, nine hundred thirty-six".