2028565597 has 4 divisors (see below), whose sum is σ = 2033250940. Its totient is φ = 2023880256.

The previous prime is 2028565577. The next prime is 2028565639. The reversal of 2028565597 is 7955658202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 601917156 + 1426648441 = 24534^2 + 37771^2 .

It is a cyclic number.

It is not a de Polignac number, because 2028565597 - 2¹¹ = 2028563549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2028565597.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028565577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2342022 + ... + 2342887.

It is an arithmetic number, because the mean of its divisors is an integer number (508312735).

Almost surely, 2^2028565597 is an apocalyptic number.

It is an amenable number.

2028565597 is a deficient number, since it is larger than the sum of its proper divisors (4685343).

2028565597 is an equidigital number, since it uses as much as digits as its factorization.

2028565597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4685342.

The product of its (nonzero) digits is 1512000, while the sum is 49.

The square root of 2028565597 is about 45039.6003201627. The cubic root of 2028565597 is about 1265.8911158806.

The spelling of 2028565597 in words is "two billion, twenty-eight million, five hundred sixty-five thousand, five hundred ninety-seven".