65500385 has 8 divisors (see below), whose sum is σ = 79175016. Its totient is φ = 52017280.

The previous prime is 65500381. The next prime is 65500399. The reversal of 65500385 is 58300556.

It can be written as a sum of positive squares in 4 ways, for example, as 9684544 + 55815841 = 3112^2 + 7471^2 .

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

It is not a de Polignac number, because 65500385 - 2² = 65500381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65500381) 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, 47126 + ... + 48495.

It is an arithmetic number, because the mean of its divisors is an integer number (9896877).

Almost surely, 2^65500385 is an apocalyptic number.

It is an amenable number.

65500385 is a deficient number, since it is larger than the sum of its proper divisors (13674631).

65500385 is a wasteful number, since it uses less digits than its factorization.

65500385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95763.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 65500385 is about 8093.2308134638. The cubic root of 65500385 is about 403.1016887347.

The spelling of 65500385 in words is "sixty-five million, five hundred thousand, three hundred eighty-five".