724667 has 4 divisors (see below), whose sum is σ = 733920. Its totient is φ = 715416.

The previous prime is 724651. The next prime is 724721. The reversal of 724667 is 766427.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766427 = 73 ⋅10499.

It is a cyclic number.

It is not a de Polignac number, because 724667 - 2⁴ = 724651 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 4508 + ... + 4665.

It is an arithmetic number, because the mean of its divisors is an integer number (183480).

2⁷²⁴⁶⁶⁷ is an apocalyptic number.

724667 is a deficient number, since it is larger than the sum of its proper divisors (9253).

724667 is an equidigital number, since it uses as much as digits as its factorization.

724667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9252.

The product of its digits is 14112, while the sum is 32.

The square root of 724667 is about 851.2737515042. The cubic root of 724667 is about 89.8213327889.

The spelling of 724667 in words is "seven hundred twenty-four thousand, six hundred sixty-seven".