622540033 has 2 divisors, whose sum is σ = 622540034. Its totient is φ = 622540032.

The previous prime is 622540031. The next prime is 622540099. The reversal of 622540033 is 330045226.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315169009 + 307371024 = 17753^2 + 17532^2 .

It is a cyclic number.

It is not a de Polignac number, because 622540033 - 2¹ = 622540031 is a prime.

Together with 622540031, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (622540031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311270016 + 311270017.

It is an arithmetic number, because the mean of its divisors is an integer number (311270017).

Almost surely, 2^622540033 is an apocalyptic number.

It is an amenable number.

622540033 is a deficient number, since it is larger than the sum of its proper divisors (1).

622540033 is an equidigital number, since it uses as much as digits as its factorization.

622540033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 622540033 is about 24950.7521529913. The cubic root of 622540033 is about 853.8647692497.

Adding to 622540033 its reverse (330045226), we get a palindrome (952585259).

The spelling of 622540033 in words is "six hundred twenty-two million, five hundred forty thousand, thirty-three".