663020629 has 2 divisors, whose sum is σ = 663020630. Its totient is φ = 663020628.

The previous prime is 663020549. The next prime is 663020663. The reversal of 663020629 is 926020366.

It is an a-pointer prime, because the next prime (663020663) can be obtained adding 663020629 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 338192100 + 324828529 = 18390^2 + 18023^2 .

It is a cyclic number.

It is not a de Polignac number, because 663020629 - 2¹³ = 663012437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 663020594 and 663020603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663020669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331510314 + 331510315.

It is an arithmetic number, because the mean of its divisors is an integer number (331510315).

Almost surely, 2^663020629 is an apocalyptic number.

It is an amenable number.

663020629 is a deficient number, since it is larger than the sum of its proper divisors (1).

663020629 is an equidigital number, since it uses as much as digits as its factorization.

663020629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 663020629 is about 25749.1869580381. The cubic root of 663020629 is about 871.9849989879.

The spelling of 663020629 in words is "six hundred sixty-three million, twenty thousand, six hundred twenty-nine".