65750231 has 2 divisors, whose sum is σ = 65750232. Its totient is φ = 65750230.

The previous prime is 65750219. The next prime is 65750257. The reversal of 65750231 is 13205756.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65750231 is a prime.

It is a super-2 number, since 2×65750231² = 8646185753106722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 65750194 and 65750203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65750281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32875115 + 32875116.

It is an arithmetic number, because the mean of its divisors is an integer number (32875116).

Almost surely, 2^65750231 is an apocalyptic number.

65750231 is a deficient number, since it is larger than the sum of its proper divisors (1).

65750231 is an equidigital number, since it uses as much as digits as its factorization.

65750231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 65750231 is about 8108.6516141711. The cubic root of 65750231 is about 403.6135715319.

Adding to 65750231 its reverse (13205756), we get a palindrome (78955987).

The spelling of 65750231 in words is "sixty-five million, seven hundred fifty thousand, two hundred thirty-one".