65289257 has 8 divisors (see below), whose sum is σ = 72228672. Its totient is φ = 58517200.

The previous prime is 65289247. The next prime is 65289277. The reversal of 65289257 is 75298256.

65289257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 65289257 - 2¹⁸ = 65027113 is a prime.

It is a super-2 number, since 2×65289257² = 8525374159224098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65289247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41018 + ... + 42579.

It is an arithmetic number, because the mean of its divisors is an integer number (9028584).

Almost surely, 2^65289257 is an apocalyptic number.

It is an amenable number.

65289257 is a deficient number, since it is larger than the sum of its proper divisors (6939415).

65289257 is a wasteful number, since it uses less digits than its factorization.

65289257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83679.

The product of its digits is 302400, while the sum is 44.

The square root of 65289257 is about 8080.1767926203. The cubic root of 65289257 is about 402.6681154131.

The spelling of 65289257 in words is "sixty-five million, two hundred eighty-nine thousand, two hundred fifty-seven".