620036663 has 2 divisors, whose sum is σ = 620036664. Its totient is φ = 620036662.

The previous prime is 620036609. The next prime is 620036687. The reversal of 620036663 is 366630026.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 620036663 - 2⁸ = 620036407 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620038663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310018331 + 310018332.

It is an arithmetic number, because the mean of its divisors is an integer number (310018332).

Almost surely, 2^620036663 is an apocalyptic number.

620036663 is a deficient number, since it is larger than the sum of its proper divisors (1).

620036663 is an equidigital number, since it uses as much as digits as its factorization.

620036663 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 32.

The square root of 620036663 is about 24900.5353958504. The cubic root of 620036663 is about 852.7187058515.

Adding to 620036663 its reverse (366630026), we get a palindrome (986666689).

The spelling of 620036663 in words is "six hundred twenty million, thirty-six thousand, six hundred sixty-three".