723298 has 4 divisors (see below), whose sum is σ = 1084950. Its totient is φ = 361648.

The previous prime is 723293. The next prime is 723319. The reversal of 723298 is 892327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 892327 = 809 ⋅1103.

It can be written as a sum of positive squares in only one way, i.e., 480249 + 243049 = 693^2 + 493^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (723293) by changing a digit.

723298 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180823 + ... + 180826.

2⁷²³²⁹⁸ is an apocalyptic number.

723298 is a deficient number, since it is larger than the sum of its proper divisors (361652).

723298 is a wasteful number, since it uses less digits than its factorization.

723298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361651.

The product of its digits is 6048, while the sum is 31.

The square root of 723298 is about 850.4692822201. The cubic root of 723298 is about 89.7647353361.

The spelling of 723298 in words is "seven hundred twenty-three thousand, two hundred ninety-eight".