65973967 has 2 divisors, whose sum is σ = 65973968. Its totient is φ = 65973966.

The previous prime is 65973937. The next prime is 65973979. The reversal of 65973967 is 76937956.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65973967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65973917) 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, 32986983 + 32986984.

It is an arithmetic number, because the mean of its divisors is an integer number (32986984).

Almost surely, 2^65973967 is an apocalyptic number.

65973967 is a deficient number, since it is larger than the sum of its proper divisors (1).

65973967 is an equidigital number, since it uses as much as digits as its factorization.

65973967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2143260, while the sum is 52.

The square root of 65973967 is about 8122.4360262178. The cubic root of 65973967 is about 404.0708609325.

The spelling of 65973967 in words is "sixty-five million, nine hundred seventy-three thousand, nine hundred sixty-seven".