620010561 has 16 divisors (see below), whose sum is σ = 832043520. Its totient is φ = 410668800.

The previous prime is 620010499. The next prime is 620010577. The reversal of 620010561 is 165010026.

It is a happy number.

It is not a de Polignac number, because 620010561 - 2⁶ = 620010497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620010361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351600 + ... + 353358.

It is an arithmetic number, because the mean of its divisors is an integer number (52002720).

Almost surely, 2^620010561 is an apocalyptic number.

It is an amenable number.

620010561 is a deficient number, since it is larger than the sum of its proper divisors (212032959).

620010561 is a wasteful number, since it uses less digits than its factorization.

620010561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 620010561 is about 24900.0112650577. The cubic root of 620010561 is about 852.7067399054.

Adding to 620010561 its reverse (165010026), we get a palindrome (785020587).

It can be divided in two parts, 6200 and 10561, that added together give a palindrome (16761).

The spelling of 620010561 in words is "six hundred twenty million, ten thousand, five hundred sixty-one".