620225140 has 24 divisors (see below), whose sum is σ = 1302958440. Its totient is φ = 247997568.

The previous prime is 620225131. The next prime is 620225149. The reversal of 620225140 is 41522026.

It is an interprime number because it is at equal distance from previous prime (620225131) and next prime (620225149).

It can be written as a sum of positive squares in 4 ways, for example, as 65999376 + 554225764 = 8124^2 + 23542^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620225149) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 80914 + ... + 88246.

It is an arithmetic number, because the mean of its divisors is an integer number (54289935).

Almost surely, 2^620225140 is an apocalyptic number.

It is an amenable number.

620225140 is an abundant number, since it is smaller than the sum of its proper divisors (682733300).

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

620225140 is a wasteful number, since it uses less digits than its factorization.

620225140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11571 (or 11569 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 620225140 is about 24904.3197056254. The cubic root of 620225140 is about 852.8050994424.

Adding to 620225140 its reverse (41522026), we get a palindrome (661747166).

The spelling of 620225140 in words is "six hundred twenty million, two hundred twenty-five thousand, one hundred forty".