620055638 has 16 divisors (see below), whose sum is σ = 946826496. Its totient is φ = 304480680.

The previous prime is 620055599. The next prime is 620055659. The reversal of 620055638 is 836550026.

620055638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 620055598 and 620055607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29045 + ... + 45647.

It is an arithmetic number, because the mean of its divisors is an integer number (59176656).

Almost surely, 2^620055638 is an apocalyptic number.

620055638 is a deficient number, since it is larger than the sum of its proper divisors (326770858).

620055638 is a wasteful number, since it uses less digits than its factorization.

620055638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16939.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 620055638 is about 24900.9164088393. The cubic root of 620055638 is about 852.7274043546.

The spelling of 620055638 in words is "six hundred twenty million, fifty-five thousand, six hundred thirty-eight".