620512073 has 2 divisors, whose sum is σ = 620512074. Its totient is φ = 620512072.

The previous prime is 620512063. The next prime is 620512103. The reversal of 620512073 is 370215026.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 612463504 + 8048569 = 24748^2 + 2837^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620512073 is a prime.

It is not a weakly prime, because it can be changed into another prime (620512003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310256036 + 310256037.

It is an arithmetic number, because the mean of its divisors is an integer number (310256037).

Almost surely, 2^620512073 is an apocalyptic number.

It is an amenable number.

620512073 is a deficient number, since it is larger than the sum of its proper divisors (1).

620512073 is an equidigital number, since it uses as much as digits as its factorization.

620512073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 620512073 is about 24910.0797469619. The cubic root of 620512073 is about 852.9365894369.

Adding to 620512073 its reverse (370215026), we get a palindrome (990727099).

The spelling of 620512073 in words is "six hundred twenty million, five hundred twelve thousand, seventy-three".