622544543 has 4 divisors (see below), whose sum is σ = 631312848. Its totient is φ = 613776240.

The previous prime is 622544513. The next prime is 622544567. The reversal of 622544543 is 345445226.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-622544543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622544513) 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, 4384046 + ... + 4384187.

It is an arithmetic number, because the mean of its divisors is an integer number (157828212).

Almost surely, 2^622544543 is an apocalyptic number.

622544543 is a deficient number, since it is larger than the sum of its proper divisors (8768305).

622544543 is an equidigital number, since it uses as much as digits as its factorization.

622544543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8768304.

The product of its digits is 115200, while the sum is 35.

The square root of 622544543 is about 24950.8425308646. The cubic root of 622544543 is about 853.8668311898.

Adding to 622544543 its reverse (345445226), we get a palindrome (967989769).

The spelling of 622544543 in words is "six hundred twenty-two million, five hundred forty-four thousand, five hundred forty-three".