65711623 has 2 divisors, whose sum is σ = 65711624. Its totient is φ = 65711622.

The previous prime is 65711617. The next prime is 65711627. The reversal of 65711623 is 32611756.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65711623 - 2⁹ = 65711111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65711627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32855811 + 32855812.

It is an arithmetic number, because the mean of its divisors is an integer number (32855812).

Almost surely, 2^65711623 is an apocalyptic number.

65711623 is a deficient number, since it is larger than the sum of its proper divisors (1).

65711623 is an equidigital number, since it uses as much as digits as its factorization.

65711623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 65711623 is about 8106.2705975066. The cubic root of 65711623 is about 403.5345565305.

The spelling of 65711623 in words is "sixty-five million, seven hundred eleven thousand, six hundred twenty-three".