2065616590 has 16 divisors (see below), whose sum is σ = 3754209888. Its totient is φ = 818224416.

The previous prime is 2065616573. The next prime is 2065616593. The reversal of 2065616590 is 956165602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065616593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001697 + ... + 1003756.

It is an arithmetic number, because the mean of its divisors is an integer number (234638118).

Almost surely, 2^2065616590 is an apocalyptic number.

2065616590 is a deficient number, since it is larger than the sum of its proper divisors (1688593298).

2065616590 is a wasteful number, since it uses less digits than its factorization.

2065616590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005563.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 2065616590 is about 45449.0548856629. The cubic root of 2065616590 is about 1273.5516738757.

The spelling of 2065616590 in words is "two billion, sixty-five million, six hundred sixteen thousand, five hundred ninety".