620770775 has 6 divisors (see below), whose sum is σ = 769755792. Its totient is φ = 496616600.

The previous prime is 620770763. The next prime is 620770789. The reversal of 620770775 is 577077026.

It is not a de Polignac number, because 620770775 - 2⁸ = 620770519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 12415391 + ... + 12415440.

It is an arithmetic number, because the mean of its divisors is an integer number (128292632).

Almost surely, 2^620770775 is an apocalyptic number.

620770775 is a deficient number, since it is larger than the sum of its proper divisors (148985017).

620770775 is a wasteful number, since it uses less digits than its factorization.

620770775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24830841 (or 24830836 counting only the distinct ones).

The product of its (nonzero) digits is 144060, while the sum is 41.

The square root of 620770775 is about 24915.2719230596. The cubic root of 620770775 is about 853.0551075411.

The spelling of 620770775 in words is "six hundred twenty million, seven hundred seventy thousand, seven hundred seventy-five".