65338885 has 16 divisors (see below), whose sum is σ = 81356400. Its totient is φ = 50315776.

The previous prime is 65338879. The next prime is 65338907. The reversal of 65338885 is 58883356.

It can be written as a sum of positive squares in 8 ways, for example, as 471969 + 64866916 = 687^2 + 8054^2 .

It is a cyclic number.

It is not a de Polignac number, because 65338885 - 2¹⁵ = 65306117 is a prime.

It is a congruent 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, 80361 + ... + 81169.

It is an arithmetic number, because the mean of its divisors is an integer number (5084775).

Almost surely, 2^65338885 is an apocalyptic number.

It is an amenable number.

65338885 is a deficient number, since it is larger than the sum of its proper divisors (16017515).

65338885 is a wasteful number, since it uses less digits than its factorization.

65338885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400.

The product of its digits is 691200, while the sum is 46.

The square root of 65338885 is about 8083.2471816715. The cubic root of 65338885 is about 402.7701156141.

The spelling of 65338885 in words is "sixty-five million, three hundred thirty-eight thousand, eight hundred eighty-five".