65385813 has 8 divisors (see below), whose sum is σ = 87220000. Its totient is φ = 43571088.

The previous prime is 65385811. The next prime is 65385833. The reversal of 65385813 is 31858356.

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

It is not a de Polignac number, because 65385813 - 2¹ = 65385811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65385811) 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, 7383 + ... + 13611.

It is an arithmetic number, because the mean of its divisors is an integer number (10902500).

Almost surely, 2^65385813 is an apocalyptic number.

It is an amenable number.

65385813 is a deficient number, since it is larger than the sum of its proper divisors (21834187).

65385813 is a wasteful number, since it uses less digits than its factorization.

65385813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9731.

The product of its digits is 86400, while the sum is 39.

The square root of 65385813 is about 8086.1494544684. The cubic root of 65385813 is about 402.8665190177.

The spelling of 65385813 in words is "sixty-five million, three hundred eighty-five thousand, eight hundred thirteen".