620566623 has 16 divisors (see below), whose sum is σ = 973438560. Its totient is φ = 389374848.

The previous prime is 620566613. The next prime is 620566631. The reversal of 620566623 is 326665026.

It is not a de Polignac number, because 620566623 - 2⁸ = 620566367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620566613) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 675540 + ... + 676457.

It is an arithmetic number, because the mean of its divisors is an integer number (60839910).

Almost surely, 2^620566623 is an apocalyptic number.

620566623 is a deficient number, since it is larger than the sum of its proper divisors (352871937).

620566623 is a wasteful number, since it uses less digits than its factorization.

620566623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352023 (or 1352017 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 620566623 is about 24911.1746611837. The cubic root of 620566623 is about 852.9615829488.

The spelling of 620566623 in words is "six hundred twenty million, five hundred sixty-six thousand, six hundred twenty-three".