620235853 has 4 divisors (see below), whose sum is σ = 624763260. Its totient is φ = 615708448.

The previous prime is 620235841. The next prime is 620235859. The reversal of 620235853 is 358532026.

It is a happy number.

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 494751049 + 125484804 = 22243^2 + 11202^2 .

It is a cyclic number.

It is not a de Polignac number, because 620235853 - 2¹⁷ = 620104781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620235859) 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 3 ways as a sum of consecutive naturals, for example, 2263498 + ... + 2263771.

It is an arithmetic number, because the mean of its divisors is an integer number (156190815).

Almost surely, 2^620235853 is an apocalyptic number.

It is an amenable number.

620235853 is a deficient number, since it is larger than the sum of its proper divisors (4527407).

620235853 is a wasteful number, since it uses less digits than its factorization.

620235853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4527406.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 620235853 is about 24904.5347878654. The cubic root of 620235853 is about 852.8100095134.

Adding to 620235853 its reverse (358532026), we get a palindrome (978767879).

It can be divided in two parts, 62023 and 5853, that added together give a palindrome (67876).

The spelling of 620235853 in words is "six hundred twenty million, two hundred thirty-five thousand, eight hundred fifty-three".