620100556 has 6 divisors (see below), whose sum is σ = 1085175980. Its totient is φ = 310050276.

The previous prime is 620100529. The next prime is 620100577. The reversal of 620100556 is 655001026.

It is a self number, because there is not a number n which added to its sum of digits gives 620100556.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77512566 + ... + 77512573.

Almost surely, 2^620100556 is an apocalyptic number.

It is an amenable number.

620100556 is a deficient number, since it is larger than the sum of its proper divisors (465075424).

620100556 is a wasteful number, since it uses less digits than its factorization.

620100556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155025143 (or 155025141 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 620100556 is about 24901.8183271825. The cubic root of 620100556 is about 852.7479949179.

The spelling of 620100556 in words is "six hundred twenty million, one hundred thousand, five hundred fifty-six".