620968228 has 12 divisors (see below), whose sum is σ = 1093988700. Its totient is φ = 308400032.

The previous prime is 620968199. The next prime is 620968273. The reversal of 620968228 is 822869026.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 76772644 + 544195584 = 8762^2 + 23328^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520351 + ... + 521542.

It is an arithmetic number, because the mean of its divisors is an integer number (91165725).

Almost surely, 2^620968228 is an apocalyptic number.

It is an amenable number.

620968228 is a deficient number, since it is larger than the sum of its proper divisors (473020472).

620968228 is a wasteful number, since it uses less digits than its factorization.

620968228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042046 (or 1042044 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 620968228 is about 24919.2340973795. The cubic root of 620968228 is about 853.1455437328.

The spelling of 620968228 in words is "six hundred twenty million, nine hundred sixty-eight thousand, two hundred twenty-eight".