620705633 has 2 divisors, whose sum is σ = 620705634. Its totient is φ = 620705632.

The previous prime is 620705627. The next prime is 620705639. The reversal of 620705633 is 336507026.

It is a balanced prime because it is at equal distance from previous prime (620705627) and next prime (620705639).

It can be written as a sum of positive squares in only one way, i.e., 335365969 + 285339664 = 18313^2 + 16892^2 .

It is a cyclic number.

It is not a de Polignac number, because 620705633 - 2¹² = 620701537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 620705633.

It is not a weakly prime, because it can be changed into another prime (620705639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310352816 + 310352817.

It is an arithmetic number, because the mean of its divisors is an integer number (310352817).

Almost surely, 2^620705633 is an apocalyptic number.

It is an amenable number.

620705633 is a deficient number, since it is larger than the sum of its proper divisors (1).

620705633 is an equidigital number, since it uses as much as digits as its factorization.

620705633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 32.

The square root of 620705633 is about 24913.9646182618. The cubic root of 620705633 is about 853.0252674015.

The spelling of 620705633 in words is "six hundred twenty million, seven hundred five thousand, six hundred thirty-three".