65345257 has 4 divisors (see below), whose sum is σ = 65558416. Its totient is φ = 65132100.

The previous prime is 65345197. The next prime is 65345279. The reversal of 65345257 is 75254356.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65345257 - 2¹¹ = 65343209 is a prime.

It is a super-2 number, since 2×65345257² = 8540005224792098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65345857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106119 + ... + 106732.

It is an arithmetic number, because the mean of its divisors is an integer number (16389604).

Almost surely, 2^65345257 is an apocalyptic number.

It is an amenable number.

65345257 is a deficient number, since it is larger than the sum of its proper divisors (213159).

65345257 is a wasteful number, since it uses less digits than its factorization.

65345257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213158.

The product of its digits is 126000, while the sum is 37.

The square root of 65345257 is about 8083.6413205931. The cubic root of 65345257 is about 402.7832082146.

Subtracting 65345257 from its reverse (75254356), we obtain a palindrome (9909099).

The spelling of 65345257 in words is "sixty-five million, three hundred forty-five thousand, two hundred fifty-seven".