920723 has 4 divisors (see below), whose sum is σ = 929280. Its totient is φ = 912168.

The previous prime is 920707. The next prime is 920729. The reversal of 920723 is 327029.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327029 = 17 ⋅19237.

It is a cyclic number.

It is not a de Polignac number, because 920723 - 2⁴ = 920707 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 920723.

It is not an unprimeable number, because it can be changed into a prime (920729) 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, 4115 + ... + 4332.

It is an arithmetic number, because the mean of its divisors is an integer number (232320).

2⁹²⁰⁷²³ is an apocalyptic number.

920723 is a deficient number, since it is larger than the sum of its proper divisors (8557).

920723 is a wasteful number, since it uses less digits than its factorization.

920723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8556.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 920723 is about 959.5431204485. The cubic root of 920723 is about 97.2843535494.

The spelling of 920723 in words is "nine hundred twenty thousand, seven hundred twenty-three".