622748531 has 2 divisors, whose sum is σ = 622748532. Its totient is φ = 622748530.

The previous prime is 622748417. The next prime is 622748563. The reversal of 622748531 is 135847226.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 622748531 - 2¹⁴ = 622732147 is a prime.

It is a super-2 number, since 2×622748531² = 775631465725315922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (922748531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311374265 + 311374266.

It is an arithmetic number, because the mean of its divisors is an integer number (311374266).

Almost surely, 2^622748531 is an apocalyptic number.

622748531 is a deficient number, since it is larger than the sum of its proper divisors (1).

622748531 is an equidigital number, since it uses as much as digits as its factorization.

622748531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 38.

The square root of 622748531 is about 24954.9299938910. The cubic root of 622748531 is about 853.9600826518.

The spelling of 622748531 in words is "six hundred twenty-two million, seven hundred forty-eight thousand, five hundred thirty-one".