65471771 has 2 divisors, whose sum is σ = 65471772. Its totient is φ = 65471770.

The previous prime is 65471761. The next prime is 65471773. The reversal of 65471771 is 17717456.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65471771 - 2²² = 61277467 is a prime.

Together with 65471773, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_3866816 and since 65471771 and 3866816 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (65471773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32735885 + 32735886.

It is an arithmetic number, because the mean of its divisors is an integer number (32735886).

Almost surely, 2^65471771 is an apocalyptic number.

65471771 is a deficient number, since it is larger than the sum of its proper divisors (1).

65471771 is an equidigital number, since it uses as much as digits as its factorization.

65471771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41160, while the sum is 38.

The square root of 65471771 is about 8091.4628467293. The cubic root of 65471771 is about 403.0429815392.

The spelling of 65471771 in words is "sixty-five million, four hundred seventy-one thousand, seven hundred seventy-one".