620435501 has 6 divisors (see below), whose sum is σ = 721731150. Its totient is φ = 531801816.

The previous prime is 620435489. The next prime is 620435509. The reversal of 620435501 is 105534026.

620435501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 511212100 + 109223401 = 22610^2 + 10451^2 .

It is not a de Polignac number, because 620435501 - 2²⁶ = 553326637 is a prime.

It is a super-2 number, since 2×620435501² = 769880421802242002, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620435509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6330926 + ... + 6331023.

It is an arithmetic number, because the mean of its divisors is an integer number (120288525).

Almost surely, 2^620435501 is an apocalyptic number.

It is an amenable number.

620435501 is a deficient number, since it is larger than the sum of its proper divisors (101295649).

620435501 is a wasteful number, since it uses less digits than its factorization.

620435501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12661963 (or 12661956 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 620435501 is about 24908.5427313603. The cubic root of 620435501 is about 852.9015034974.

Adding to 620435501 its reverse (105534026), we get a palindrome (725969527).

The spelling of 620435501 in words is "six hundred twenty million, four hundred thirty-five thousand, five hundred one".