620821527136 has 24 divisors (see below), whose sum is σ = 1224476862840. Its totient is φ = 309843276288.

The previous prime is 620821527133. The next prime is 620821527149. The reversal of 620821527136 is 631725128026.

It is a junction number, because it is equal to n+sod(n) for n = 620821527092 and 620821527101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620821527133) 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 3 ways as a sum of consecutive naturals, for example, 17716201 + ... + 17751208.

It is an arithmetic number, because the mean of its divisors is an integer number (51019869285).

Almost surely, 2^620821527136 is an apocalyptic number.

It is an amenable number.

620821527136 is a deficient number, since it is larger than the sum of its proper divisors (603655335704).

620821527136 is a wasteful number, since it uses less digits than its factorization.

620821527136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35467966 (or 35467958 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 620821527136 in words is "six hundred twenty billion, eight hundred twenty-one million, five hundred twenty-seven thousand, one hundred thirty-six".