622040651 has 2 divisors, whose sum is σ = 622040652. Its totient is φ = 622040650.

The previous prime is 622040647. The next prime is 622040789. The reversal of 622040651 is 156040226.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 622040651 - 2² = 622040647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 622040651.

It is not a weakly prime, because it can be changed into another prime (622040051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311020325 + 311020326.

It is an arithmetic number, because the mean of its divisors is an integer number (311020326).

Almost surely, 2^622040651 is an apocalyptic number.

622040651 is a deficient number, since it is larger than the sum of its proper divisors (1).

622040651 is an equidigital number, since it uses as much as digits as its factorization.

622040651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 622040651 is about 24940.7427916652. The cubic root of 622040651 is about 853.6363937019.

Adding to 622040651 its reverse (156040226), we get a palindrome (778080877).

The spelling of 622040651 in words is "six hundred twenty-two million, forty thousand, six hundred fifty-one".