7220823 has 4 divisors (see below), whose sum is σ = 9627768. Its totient is φ = 4813880.

The previous prime is 7220821. The next prime is 7220849. The reversal of 7220823 is 3280227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3280227 = 3 ⋅1093409.

It is a cyclic number.

It is not a de Polignac number, because 7220823 - 2¹ = 7220821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7220793 and 7220802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220821) 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, 1203468 + ... + 1203473.

It is an arithmetic number, because the mean of its divisors is an integer number (2406942).

Almost surely, 2^7220823 is an apocalyptic number.

7220823 is a deficient number, since it is larger than the sum of its proper divisors (2406945).

7220823 is a wasteful number, since it uses less digits than its factorization.

7220823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2406944.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 7220823 is about 2687.1589085873. The cubic root of 7220823 is about 193.2838494707.

The spelling of 7220823 in words is "seven million, two hundred twenty thousand, eight hundred twenty-three".