620324440104601 has 4 divisors (see below), whose sum is σ = 620397755848804. Its totient is φ = 620251124360400.

The previous prime is 620324440104581. The next prime is 620324440104619. The reversal of 620324440104601 is 106401044423026.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 403442414687376 + 216882025417225 = 20085876^2 + 14726915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620324440104601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620324440104701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36657859410 + ... + 36657876331.

It is an arithmetic number, because the mean of its divisors is an integer number (155099438962201).

Almost surely, 2^{620324440104601} is an apocalyptic number.

It is an amenable number.

620324440104601 is a deficient number, since it is larger than the sum of its proper divisors (73315744203).

620324440104601 is an equidigital number, since it uses as much as digits as its factorization.

620324440104601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73315744202.

The product of its (nonzero) digits is 110592, while the sum is 37.

Adding to 620324440104601 its reverse (106401044423026), we get a palindrome (726725484527627).

The spelling of 620324440104601 in words is "six hundred twenty trillion, three hundred twenty-four billion, four hundred forty million, one hundred four thousand, six hundred one".