662723 has 4 divisors (see below), whose sum is σ = 664440. Its totient is φ = 661008.

The previous prime is 662719. The next prime is 662743. The reversal of 662723 is 327266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327266 = 2 ⋅163633.

It is a cyclic number.

It is not a de Polignac number, because 662723 - 2² = 662719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 662692 and 662701.

It is not an unprimeable number, because it can be changed into a prime (662713) 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, 23 + ... + 1151.

It is an arithmetic number, because the mean of its divisors is an integer number (166110).

2⁶⁶²⁷²³ is an apocalyptic number.

662723 is a deficient number, since it is larger than the sum of its proper divisors (1717).

662723 is a wasteful number, since it uses less digits than its factorization.

662723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716.

The product of its digits is 3024, while the sum is 26.

The square root of 662723 is about 814.0780060903. The cubic root of 662723 is about 87.1854501858.

Adding to 662723 its reverse (327266), we get a palindrome (989989).

The spelling of 662723 in words is "six hundred sixty-two thousand, seven hundred twenty-three".