620725242 has 16 divisors (see below), whose sum is σ = 1295426880. Its totient is φ = 197912352.

The previous prime is 620725187. The next prime is 620725331. The reversal of 620725242 is 242527026.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2248867 + ... + 2249142.

It is an arithmetic number, because the mean of its divisors is an integer number (80964180).

Almost surely, 2^620725242 is an apocalyptic number.

620725242 is an abundant number, since it is smaller than the sum of its proper divisors (674701638).

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

620725242 is a wasteful number, since it uses less digits than its factorization.

620725242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4498037.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 620725242 is about 24914.3581494688. The cubic root of 620725242 is about 853.0342500794.

The spelling of 620725242 in words is "six hundred twenty million, seven hundred twenty-five thousand, two hundred forty-two".