65817461 has 2 divisors, whose sum is σ = 65817462. Its totient is φ = 65817460.

The previous prime is 65817379. The next prime is 65817481. The reversal of 65817461 is 16471856.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57002500 + 8814961 = 7550^2 + 2969^2 .

It is a cyclic number.

It is not a de Polignac number, because 65817461 - 2¹⁸ = 65555317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65817481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32908730 + 32908731.

It is an arithmetic number, because the mean of its divisors is an integer number (32908731).

Almost surely, 2^65817461 is an apocalyptic number.

It is an amenable number.

65817461 is a deficient number, since it is larger than the sum of its proper divisors (1).

65817461 is an equidigital number, since it uses as much as digits as its factorization.

65817461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 65817461 is about 8112.7961271069. The cubic root of 65817461 is about 403.7510904257.

The spelling of 65817461 in words is "sixty-five million, eight hundred seventeen thousand, four hundred sixty-one".