620735616433 has 2 divisors, whose sum is σ = 620735616434. Its totient is φ = 620735616432.

The previous prime is 620735616373. The next prime is 620735616467. The reversal of 620735616433 is 334616537026.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 613327055104 + 7408561329 = 783152^2 + 86073^2 .

It is a cyclic number.

It is not a de Polignac number, because 620735616433 - 2²⁹ = 620198745521 is a prime.

It is not a weakly prime, because it can be changed into another prime (620735616733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310367808216 + 310367808217.

It is an arithmetic number, because the mean of its divisors is an integer number (310367808217).

Almost surely, 2^620735616433 is an apocalyptic number.

It is an amenable number.

620735616433 is a deficient number, since it is larger than the sum of its proper divisors (1).

620735616433 is an equidigital number, since it uses as much as digits as its factorization.

620735616433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 46.

The spelling of 620735616433 in words is "six hundred twenty billion, seven hundred thirty-five million, six hundred sixteen thousand, four hundred thirty-three".