620107643 has 2 divisors, whose sum is σ = 620107644. Its totient is φ = 620107642.

The previous prime is 620107637. The next prime is 620107661. The reversal of 620107643 is 346701026.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 620107643 - 2⁴ = 620107627 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (620107673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310053821 + 310053822.

It is an arithmetic number, because the mean of its divisors is an integer number (310053822).

Almost surely, 2^620107643 is an apocalyptic number.

620107643 is a deficient number, since it is larger than the sum of its proper divisors (1).

620107643 is an equidigital number, since it uses as much as digits as its factorization.

620107643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 620107643 is about 24901.9606256214. The cubic root of 620107643 is about 852.7512435319.

Adding to 620107643 its reverse (346701026), we get a palindrome (966808669).

The spelling of 620107643 in words is "six hundred twenty million, one hundred seven thousand, six hundred forty-three".