65185697 has 2 divisors, whose sum is σ = 65185698. Its totient is φ = 65185696.

The previous prime is 65185669. The next prime is 65185699. The reversal of 65185697 is 79658156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34093921 + 31091776 = 5839^2 + 5576^2 .

It is a cyclic number.

It is not a de Polignac number, because 65185697 - 2⁸ = 65185441 is a prime.

Together with 65185699, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65185699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32592848 + 32592849.

It is an arithmetic number, because the mean of its divisors is an integer number (32592849).

Almost surely, 2^65185697 is an apocalyptic number.

It is an amenable number.

65185697 is a deficient number, since it is larger than the sum of its proper divisors (1).

65185697 is an equidigital number, since it uses as much as digits as its factorization.

65185697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 47.

The square root of 65185697 is about 8073.7659738192. The cubic root of 65185697 is about 402.4551024339.

The spelling of 65185697 in words is "sixty-five million, one hundred eighty-five thousand, six hundred ninety-seven".