620025665 has 16 divisors (see below), whose sum is σ = 867676800. Its totient is φ = 425159280.

The previous prime is 620025617. The next prime is 620025671. The reversal of 620025665 is 566520026.

620025665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 620025665 - 2¹⁶ = 619960129 is a prime.

It is a super-3 number, since 3×620025665³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179051 + ... + 182480.

It is an arithmetic number, because the mean of its divisors is an integer number (54229800).

Almost surely, 2^620025665 is an apocalyptic number.

It is an amenable number.

620025665 is a deficient number, since it is larger than the sum of its proper divisors (247651135).

620025665 is an equidigital number, since it uses as much as digits as its factorization.

620025665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361557 (or 361543 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 620025665 is about 24900.3145562461. The cubic root of 620025665 is about 852.7136640767.

The spelling of 620025665 in words is "six hundred twenty million, twenty-five thousand, six hundred sixty-five".