723998 has 8 divisors (see below), whose sum is σ = 1184760. Its totient is φ = 329080.

The previous prime is 723997. The next prime is 724001. The reversal of 723998 is 899327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 7⁴ + 2¹⁷ + 9⁵ + 3³ + 9⁶ + 8 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723997) 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, 16433 + ... + 16476.

It is an arithmetic number, because the mean of its divisors is an integer number (148095).

2⁷²³⁹⁹⁸ is an apocalyptic number.

723998 is a deficient number, since it is larger than the sum of its proper divisors (460762).

723998 is a wasteful number, since it uses less digits than its factorization.

723998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32922.

The product of its digits is 27216, while the sum is 38.

The square root of 723998 is about 850.8807201953. The cubic root of 723998 is about 89.7936837802.

It can be divided in two parts, 7239 and 98, that added together give a palindrome (7337).

The spelling of 723998 in words is "seven hundred twenty-three thousand, nine hundred ninety-eight".