220628623 has 2 divisors, whose sum is σ = 220628624. Its totient is φ = 220628622.

The previous prime is 220628531. The next prime is 220628641. The reversal of 220628623 is 326826022.

220628623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220628623 - 2¹³ = 220620431 is a prime.

It is a super-2 number, since 2×220628623² = 97353978573752258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220628693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110314311 + 110314312.

It is an arithmetic number, because the mean of its divisors is an integer number (110314312).

Almost surely, 2^220628623 is an apocalyptic number.

220628623 is a deficient number, since it is larger than the sum of its proper divisors (1).

220628623 is an equidigital number, since it uses as much as digits as its factorization.

220628623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 220628623 is about 14853.5727352041. The cubic root of 220628623 is about 604.2555084277.

The spelling of 220628623 in words is "two hundred twenty million, six hundred twenty-eight thousand, six hundred twenty-three".