65201605 has 12 divisors (see below), whose sum is σ = 91016460. Its totient is φ = 44709504.

The previous prime is 65201569. The next prime is 65201611. The reversal of 65201605 is 50610256.

It can be written as a sum of positive squares in 2 ways, for example, as 37344321 + 27857284 = 6111^2 + 5278^2 .

It is not a de Polignac number, because 65201605 - 2⁹ = 65201093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65201605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132820 + ... + 133309.

It is an arithmetic number, because the mean of its divisors is an integer number (7584705).

Almost surely, 2^65201605 is an apocalyptic number.

It is an amenable number.

65201605 is a deficient number, since it is larger than the sum of its proper divisors (25814855).

65201605 is a wasteful number, since it uses less digits than its factorization.

65201605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266148 (or 266141 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 65201605 is about 8074.7510797547. The cubic root of 65201605 is about 402.4878383219.

The spelling of 65201605 in words is "sixty-five million, two hundred one thousand, six hundred five".