65109071 has 2 divisors, whose sum is σ = 65109072. Its totient is φ = 65109070.

The previous prime is 65109061. The next prime is 65109073. The reversal of 65109071 is 17090156.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65109071 - 2⁶ = 65109007 is a prime.

It is a super-2 number, since 2×65109071² = 8478382252966082, which contains 22 as substring.

Together with 65109073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65109073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32554535 + 32554536.

It is an arithmetic number, because the mean of its divisors is an integer number (32554536).

Almost surely, 2^65109071 is an apocalyptic number.

65109071 is a deficient number, since it is larger than the sum of its proper divisors (1).

65109071 is an equidigital number, since it uses as much as digits as its factorization.

65109071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 65109071 is about 8069.0192092968. The cubic root of 65109071 is about 402.2973448398.

The spelling of 65109071 in words is "sixty-five million, one hundred nine thousand, seventy-one".