65612273 has 2 divisors, whose sum is σ = 65612274. Its totient is φ = 65612272.

The previous prime is 65612257. The next prime is 65612279. The reversal of 65612273 is 37221656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43784689 + 21827584 = 6617^2 + 4672^2 .

It is a cyclic number.

It is not a de Polignac number, because 65612273 - 2⁴ = 65612257 is a prime.

It is not a weakly prime, because it can be changed into another prime (65612279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32806136 + 32806137.

It is an arithmetic number, because the mean of its divisors is an integer number (32806137).

Almost surely, 2^65612273 is an apocalyptic number.

It is an amenable number.

65612273 is a deficient number, since it is larger than the sum of its proper divisors (1).

65612273 is an equidigital number, since it uses as much as digits as its factorization.

65612273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 32.

The square root of 65612273 is about 8100.1403074268. The cubic root of 65612273 is about 403.3310847646.

The spelling of 65612273 in words is "sixty-five million, six hundred twelve thousand, two hundred seventy-three".