620435441 has 2 divisors, whose sum is σ = 620435442. Its totient is φ = 620435440.

The previous prime is 620435407. The next prime is 620435471. The reversal of 620435441 is 144534026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 415344400 + 205091041 = 20380^2 + 14321^2 .

It is a cyclic number.

It is not a de Polignac number, because 620435441 - 2²² = 616241137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (620435401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310217720 + 310217721.

It is an arithmetic number, because the mean of its divisors is an integer number (310217721).

Almost surely, 2^620435441 is an apocalyptic number.

It is an amenable number.

620435441 is a deficient number, since it is larger than the sum of its proper divisors (1).

620435441 is an equidigital number, since it uses as much as digits as its factorization.

620435441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 620435441 is about 24908.5415269542. The cubic root of 620435441 is about 852.9014760037.

Adding to 620435441 its reverse (144534026), we get a palindrome (764969467).

The spelling of 620435441 in words is "six hundred twenty million, four hundred thirty-five thousand, four hundred forty-one".