65266257 has 16 divisors (see below), whose sum is σ = 100369280. Its totient is φ = 36951552.

The previous prime is 65266237. The next prime is 65266291. The reversal of 65266257 is 75266256.

It is not a de Polignac number, because 65266257 - 2¹⁵ = 65233489 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65266207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11968 + ... + 16545.

It is an arithmetic number, because the mean of its divisors is an integer number (6273080).

Almost surely, 2^65266257 is an apocalyptic number.

It is an amenable number.

65266257 is a deficient number, since it is larger than the sum of its proper divisors (35103023).

65266257 is a wasteful number, since it uses less digits than its factorization.

65266257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28632.

The product of its digits is 151200, while the sum is 39.

The square root of 65266257 is about 8078.7534310684. The cubic root of 65266257 is about 402.6208260896.

Subtracting 65266257 from its reverse (75266256), we obtain a palindrome (9999999).

The spelling of 65266257 in words is "sixty-five million, two hundred sixty-six thousand, two hundred fifty-seven".