2065557065 has 16 divisors (see below), whose sum is σ = 2912003136. Its totient is φ = 1386667200.

The previous prime is 2065557049. The next prime is 2065557071. The reversal of 2065557065 is 5607555602.

It is not a de Polignac number, because 2065557065 - 2⁴ = 2065557049 is a prime.

It is a Duffinian 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, 1443731 + ... + 1445160.

It is an arithmetic number, because the mean of its divisors is an integer number (182000196).

Almost surely, 2^2065557065 is an apocalyptic number.

It is an amenable number.

2065557065 is a deficient number, since it is larger than the sum of its proper divisors (846446071).

2065557065 is a wasteful number, since it uses less digits than its factorization.

2065557065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888920.

The product of its (nonzero) digits is 315000, while the sum is 41.

The square root of 2065557065 is about 45448.4000268436. The cubic root of 2065557065 is about 1273.5394404192.

The spelling of 2065557065 in words is "two billion, sixty-five million, five hundred fifty-seven thousand, sixty-five".