620434775 has 24 divisors (see below), whose sum is σ = 828708864. Its totient is φ = 459439200.

The previous prime is 620434769. The next prime is 620434813. The reversal of 620434775 is 577434026.

It is not a de Polignac number, because 620434775 - 2¹⁴ = 620418391 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 422 + ... + 35228.

It is an arithmetic number, because the mean of its divisors is an integer number (34529536).

Almost surely, 2^620434775 is an apocalyptic number.

620434775 is a deficient number, since it is larger than the sum of its proper divisors (208274089).

620434775 is a wasteful number, since it uses less digits than its factorization.

620434775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34871 (or 34866 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 38.

The square root of 620434775 is about 24908.5281580426. The cubic root of 620434775 is about 852.9011708242.

The spelling of 620434775 in words is "six hundred twenty million, four hundred thirty-four thousand, seven hundred seventy-five".