2065343657 has 8 divisors (see below), whose sum is σ = 2225611080. Its totient is φ = 1905275520.

The previous prime is 2065343641. The next prime is 2065343671. The reversal of 2065343657 is 7563435602.

It can be written as a sum of positive squares in 4 ways, for example, as 93006736 + 1972336921 = 9644^2 + 44411^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2065343657 - 2⁴ = 2065343641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2065343677) 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, 27932 + ... + 70077.

It is an arithmetic number, because the mean of its divisors is an integer number (278201385).

Almost surely, 2^2065343657 is an apocalyptic number.

It is an amenable number.

2065343657 is a deficient number, since it is larger than the sum of its proper divisors (160267423).

2065343657 is a wasteful number, since it uses less digits than its factorization.

2065343657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99643.

The product of its (nonzero) digits is 453600, while the sum is 41.

The square root of 2065343657 is about 45446.0521607763. The cubic root of 2065343657 is about 1273.4955793111.

The spelling of 2065343657 in words is "two billion, sixty-five million, three hundred forty-three thousand, six hundred fifty-seven".