620522143 has 2 divisors, whose sum is σ = 620522144. Its totient is φ = 620522142.

The previous prime is 620522099. The next prime is 620522209. The reversal of 620522143 is 341225026.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620522143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620526143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310261071 + 310261072.

It is an arithmetic number, because the mean of its divisors is an integer number (310261072).

Almost surely, 2^620522143 is an apocalyptic number.

620522143 is a deficient number, since it is larger than the sum of its proper divisors (1).

620522143 is an equidigital number, since it uses as much as digits as its factorization.

620522143 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 25.

The square root of 620522143 is about 24910.2818731543. The cubic root of 620522143 is about 852.9412033815.

Adding to 620522143 its reverse (341225026), we get a palindrome (961747169).

The spelling of 620522143 in words is "six hundred twenty million, five hundred twenty-two thousand, one hundred forty-three".