620221200712 has 8 divisors (see below), whose sum is σ = 1162914751350. Its totient is φ = 310110600352.

The previous prime is 620221200701. The next prime is 620221200727. The reversal of 620221200712 is 217002122026.

It can be written as a sum of positive squares in only one way, i.e., 347375856996 + 272845343716 = 589386^2 + 522346^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 38763825037 + ... + 38763825052.

Almost surely, 2^620221200712 is an apocalyptic number.

It is an amenable number.

620221200712 is a deficient number, since it is larger than the sum of its proper divisors (542693550638).

620221200712 is a wasteful number, since it uses less digits than its factorization.

620221200712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77527650095 (or 77527650091 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 620221200712 its reverse (217002122026), we get a palindrome (837223322738).

The spelling of 620221200712 in words is "six hundred twenty billion, two hundred twenty-one million, two hundred thousand, seven hundred twelve".