723705 has 8 divisors (see below), whose sum is σ = 1157952. Its totient is φ = 385968.

The previous prime is 723661. The next prime is 723721. The reversal of 723705 is 507327.

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

It is not a de Polignac number, because 723705 - 2⁹ = 723193 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24109 + ... + 24138.

It is an arithmetic number, because the mean of its divisors is an integer number (144744).

2⁷²³⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

723705 is a deficient number, since it is larger than the sum of its proper divisors (434247).

723705 is a wasteful number, since it uses less digits than its factorization.

723705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48255.

The product of its (nonzero) digits is 1470, while the sum is 24.

The square root of 723705 is about 850.7085282281. The cubic root of 723705 is about 89.7815690601.

The spelling of 723705 in words is "seven hundred twenty-three thousand, seven hundred five".