65057285 has 8 divisors (see below), whose sum is σ = 80178936. Its totient is φ = 50639040.

The previous prime is 65057281. The next prime is 65057287. The reversal of 65057285 is 58275056.

It can be written as a sum of positive squares in 4 ways, for example, as 10975969 + 54081316 = 3313^2 + 7354^2 .

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

It is not a de Polignac number, because 65057285 - 2² = 65057281 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 (65057281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175646 + ... + 176015.

It is an arithmetic number, because the mean of its divisors is an integer number (10022367).

Almost surely, 2^65057285 is an apocalyptic number.

It is an amenable number.

65057285 is a deficient number, since it is larger than the sum of its proper divisors (15121651).

65057285 is a wasteful number, since it uses less digits than its factorization.

65057285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351703.

The product of its (nonzero) digits is 84000, while the sum is 38.

The square root of 65057285 is about 8065.8096307810. The cubic root of 65057285 is about 402.1906577282.

The spelling of 65057285 in words is "sixty-five million, fifty-seven thousand, two hundred eighty-five".