620345133 has 12 divisors (see below), whose sum is σ = 916893120. Its totient is φ = 403945416.

The previous prime is 620345093. The next prime is 620345149. The reversal of 620345133 is 331543026.

It is a happy number.

620345133 is a `hidden beast` number, since 6 + 203 + 451 + 3 + 3 = 666.

It is not a de Polignac number, because 620345133 - 2⁸ = 620344877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 620345097 and 620345106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620345183) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 801093 + ... + 801866.

It is an arithmetic number, because the mean of its divisors is an integer number (76407760).

Almost surely, 2^620345133 is an apocalyptic number.

It is an amenable number.

620345133 is a deficient number, since it is larger than the sum of its proper divisors (296547987).

620345133 is a wasteful number, since it uses less digits than its factorization.

620345133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603008 (or 1603005 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 620345133 is about 24906.7286691769. The cubic root of 620345133 is about 852.8600923997.

Adding to 620345133 its reverse (331543026), we get a palindrome (951888159).

The spelling of 620345133 in words is "six hundred twenty million, three hundred forty-five thousand, one hundred thirty-three".