723598 has 4 divisors (see below), whose sum is σ = 1085400. Its totient is φ = 361798.

The previous prime is 723589. The next prime is 723601. The reversal of 723598 is 895327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 895327 = 193 ⋅4639.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180898 + ... + 180901.

It is an arithmetic number, because the mean of its divisors is an integer number (271350).

2⁷²³⁵⁹⁸ is an apocalyptic number.

723598 is a deficient number, since it is larger than the sum of its proper divisors (361802).

723598 is a wasteful number, since it uses less digits than its factorization.

723598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361801.

The product of its digits is 15120, while the sum is 34.

The square root of 723598 is about 850.6456371486. The cubic root of 723598 is about 89.7771440981. Note that the first 3 decimals are identical.

The spelling of 723598 in words is "seven hundred twenty-three thousand, five hundred ninety-eight".