620221330 has 8 divisors (see below), whose sum is σ = 1116398412. Its totient is φ = 248088528.

The previous prime is 620221267. The next prime is 620221361. The reversal of 620221330 is 33122026.

It can be written as a sum of positive squares in 2 ways, for example, as 577488961 + 42732369 = 24031^2 + 6537^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 620221298 and 620221307.

It is an unprimeable number.

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, 31011057 + ... + 31011076.

Almost surely, 2^620221330 is an apocalyptic number.

620221330 is a deficient number, since it is larger than the sum of its proper divisors (496177082).

620221330 is a wasteful number, since it uses less digits than its factorization.

620221330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62022140.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 620221330 is about 24904.2432127539. The cubic root of 620221330 is about 852.8033531980.

Adding to 620221330 its reverse (33122026), we get a palindrome (653343356).

The spelling of 620221330 in words is "six hundred twenty million, two hundred twenty-one thousand, three hundred thirty".