620428068 has 54 divisors (see below), whose sum is σ = 1698239634. Its totient is φ = 190899072.

The previous prime is 620428063. The next prime is 620428111. The reversal of 620428068 is 860824026.

620428068 is a `hidden beast` number, since 620 + 4 + 28 + 0 + 6 + 8 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 29354724 + 591073344 = 5418^2 + 24312^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (620428063) 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 17 ways as a sum of consecutive naturals, for example, 44905 + ... + 57072.

Almost surely, 2^620428068 is an apocalyptic number.

It is an amenable number.

620428068 is an abundant number, since it is smaller than the sum of its proper divisors (1077811566).

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

620428068 is a wasteful number, since it uses less digits than its factorization.

620428068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102013 (or 101995 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 620428068 is about 24908.3935250750. The cubic root of 620428068 is about 852.8980974801.

The spelling of 620428068 in words is "six hundred twenty million, four hundred twenty-eight thousand, sixty-eight".