620135188 has 12 divisors (see below), whose sum is σ = 1122658740. Its totient is φ = 299375552.

The previous prime is 620135161. The next prime is 620135189. The reversal of 620135188 is 881531026.

It can be written as a sum of positive squares in 2 ways, for example, as 106750224 + 513384964 = 10332^2 + 22658^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620135189) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2672881 + ... + 2673112.

It is an arithmetic number, because the mean of its divisors is an integer number (93554895).

Almost surely, 2^620135188 is an apocalyptic number.

It is an amenable number.

620135188 is a deficient number, since it is larger than the sum of its proper divisors (502523552).

620135188 is a wasteful number, since it uses less digits than its factorization.

620135188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5346026 (or 5346024 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 620135188 is about 24902.5136883809. The cubic root of 620135188 is about 852.7638696652.

The spelling of 620135188 in words is "six hundred twenty million, one hundred thirty-five thousand, one hundred eighty-eight".