630622033 has 2 divisors, whose sum is σ = 630622034. Its totient is φ = 630622032.

The previous prime is 630621991. The next prime is 630622067. The reversal of 630622033 is 330226036.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 580665409 + 49956624 = 24097^2 + 7068^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630622033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 630621989 and 630622007.

It is not a weakly prime, because it can be changed into another prime (630622093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315311016 + 315311017.

It is an arithmetic number, because the mean of its divisors is an integer number (315311017).

Almost surely, 2^630622033 is an apocalyptic number.

It is an amenable number.

630622033 is a deficient number, since it is larger than the sum of its proper divisors (1).

630622033 is an equidigital number, since it uses as much as digits as its factorization.

630622033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 25.

The square root of 630622033 is about 25112.1889328668. The cubic root of 630622033 is about 857.5439357338.

Adding to 630622033 its reverse (330226036), we get a palindrome (960848069).

The spelling of 630622033 in words is "six hundred thirty million, six hundred twenty-two thousand, thirty-three".