620649196556 has 24 divisors (see below), whose sum is σ = 1150068172176. Its totient is φ = 292059614720.

The previous prime is 620649196543. The next prime is 620649196613. The reversal of 620649196556 is 655691946026.

It is a super-2 number, since 2×620649196556² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 620649196495 and 620649196504.

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 7 ways as a sum of consecutive naturals, for example, 1913216 + ... + 2213976.

It is an arithmetic number, because the mean of its divisors is an integer number (47919507174).

Almost surely, 2^620649196556 is an apocalyptic number.

It is an amenable number.

620649196556 is a deficient number, since it is larger than the sum of its proper divisors (529418975620).

620649196556 is a wasteful number, since it uses less digits than its factorization.

620649196556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331129 (or 331127 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 59.

The spelling of 620649196556 in words is "six hundred twenty billion, six hundred forty-nine million, one hundred ninety-six thousand, five hundred fifty-six".