7220023 has 4 divisors (see below), whose sum is σ = 7229880. Its totient is φ = 7210168.

The previous prime is 7219997. The next prime is 7220027. The reversal of 7220023 is 3200227.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3200227 = 19 ⋅168433.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7220023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7219979 and 7220006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220027) 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, 3733 + ... + 5326.

It is an arithmetic number, because the mean of its divisors is an integer number (1807470).

Almost surely, 2^7220023 is an apocalyptic number.

7220023 is a deficient number, since it is larger than the sum of its proper divisors (9857).

7220023 is an equidigital number, since it uses as much as digits as its factorization.

7220023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9856.

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 7220023 is about 2687.0100483623. The cubic root of 7220023 is about 193.2767111897.

The spelling of 7220023 in words is "seven million, two hundred twenty thousand, twenty-three".