220623623 has 4 divisors (see below), whose sum is σ = 240680328. Its totient is φ = 200566920.

The previous prime is 220623617. The next prime is 220623653. The reversal of 220623623 is 326326022.

220623623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220623623 - 2⁴ = 220623607 is a prime.

It is a super-2 number, since 2×220623623² = 97349566051292258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220623592 and 220623601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220623653) 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, 10028336 + ... + 10028357.

It is an arithmetic number, because the mean of its divisors is an integer number (60170082).

Almost surely, 2^220623623 is an apocalyptic number.

220623623 is a deficient number, since it is larger than the sum of its proper divisors (20056705).

220623623 is a wasteful number, since it uses less digits than its factorization.

220623623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20056704.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 220623623 is about 14853.4044245755. The cubic root of 220623623 is about 604.2509437429.

Adding to 220623623 its reverse (326326022), we get a palindrome (546949645).

The spelling of 220623623 in words is "two hundred twenty million, six hundred twenty-three thousand, six hundred twenty-three".