65890751 has 2 divisors, whose sum is σ = 65890752. Its totient is φ = 65890750.

The previous prime is 65890739. The next prime is 65890753. The reversal of 65890751 is 15709856.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65890751 is a prime.

Together with 65890753, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 65890699 and 65890708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65890753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32945375 + 32945376.

It is an arithmetic number, because the mean of its divisors is an integer number (32945376).

Almost surely, 2^65890751 is an apocalyptic number.

65890751 is a deficient number, since it is larger than the sum of its proper divisors (1).

65890751 is an equidigital number, since it uses as much as digits as its factorization.

65890751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 65890751 is about 8117.3118087209. The cubic root of 65890751 is about 403.9008983959.

The spelling of 65890751 in words is "sixty-five million, eight hundred ninety thousand, seven hundred fifty-one".