620742208 has 28 divisors (see below), whose sum is σ = 1249143552. Its totient is φ = 305997440.

The previous prime is 620742197. The next prime is 620742209. The reversal of 620742208 is 802247026.

620742208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 620742208.

It is not an unprimeable number, because it can be changed into a prime (620742209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63760 + ... + 72847.

Almost surely, 2^620742208 is an apocalyptic number.

It is an amenable number.

620742208 is an abundant number, since it is smaller than the sum of its proper divisors (628401344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620742208 is a wasteful number, since it uses less digits than its factorization.

620742208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136690 (or 136680 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 620742208 is about 24914.6986335376. The cubic root of 620742208 is about 853.0420218740.

The spelling of 620742208 in words is "six hundred twenty million, seven hundred forty-two thousand, two hundred eight".