723047 has 4 divisors (see below), whose sum is σ = 778680. Its totient is φ = 667416.

The previous prime is 723043. The next prime is 723049. The reversal of 723047 is 740327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740327 = 7 ⋅105761.

It is a cyclic number.

It is not a de Polignac number, because 723047 - 2² = 723043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723043) 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, 27797 + ... + 27822.

It is an arithmetic number, because the mean of its divisors is an integer number (194670).

2⁷²³⁰⁴⁷ is an apocalyptic number.

723047 is a deficient number, since it is larger than the sum of its proper divisors (55633).

723047 is a wasteful number, since it uses less digits than its factorization.

723047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55632.

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 723047 is about 850.3217038274. The cubic root of 723047 is about 89.7543507020.

The spelling of 723047 in words is "seven hundred twenty-three thousand, forty-seven", and thus it is an iban number.