65861473 has 2 divisors, whose sum is σ = 65861474. Its totient is φ = 65861472.

The previous prime is 65861461. The next prime is 65861491. The reversal of 65861473 is 37416856.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61732449 + 4129024 = 7857^2 + 2032^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65861473 is a prime.

It is not a weakly prime, because it can be changed into another prime (65861573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32930736 + 32930737.

It is an arithmetic number, because the mean of its divisors is an integer number (32930737).

Almost surely, 2^65861473 is an apocalyptic number.

It is an amenable number.

65861473 is a deficient number, since it is larger than the sum of its proper divisors (1).

65861473 is an equidigital number, since it uses as much as digits as its factorization.

65861473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 65861473 is about 8115.5081787895. The cubic root of 65861473 is about 403.8410662128.

The spelling of 65861473 in words is "sixty-five million, eight hundred sixty-one thousand, four hundred seventy-three".