65972833 has 2 divisors, whose sum is σ = 65972834. Its totient is φ = 65972832.

The previous prime is 65972831. The next prime is 65972857. The reversal of 65972833 is 33827956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44182609 + 21790224 = 6647^2 + 4668^2 .

It is a cyclic number.

It is not a de Polignac number, because 65972833 - 2¹ = 65972831 is a prime.

Together with 65972831, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 65972833.

It is not a weakly prime, because it can be changed into another prime (65972831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32986416 + 32986417.

It is an arithmetic number, because the mean of its divisors is an integer number (32986417).

Almost surely, 2^65972833 is an apocalyptic number.

It is an amenable number.

65972833 is a deficient number, since it is larger than the sum of its proper divisors (1).

65972833 is an equidigital number, since it uses as much as digits as its factorization.

65972833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The square root of 65972833 is about 8122.3662192738. The cubic root of 65972833 is about 404.0685457820.

The spelling of 65972833 in words is "sixty-five million, nine hundred seventy-two thousand, eight hundred thirty-three".