620612764573 has 2 divisors, whose sum is σ = 620612764574. Its totient is φ = 620612764572.

The previous prime is 620612764517. The next prime is 620612764619. The reversal of 620612764573 is 375467216026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 620255478969 + 357285604 = 787563^2 + 18902^2 .

It is a cyclic number.

It is not a de Polignac number, because 620612764573 - 2⁹ = 620612764061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620612764873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310306382286 + 310306382287.

It is an arithmetic number, because the mean of its divisors is an integer number (310306382287).

Almost surely, 2^620612764573 is an apocalyptic number.

It is an amenable number.

620612764573 is a deficient number, since it is larger than the sum of its proper divisors (1).

620612764573 is an equidigital number, since it uses as much as digits as its factorization.

620612764573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 620612764573 in words is "six hundred twenty billion, six hundred twelve million, seven hundred sixty-four thousand, five hundred seventy-three".