65671071 has 16 divisors (see below), whose sum is σ = 89406720. Its totient is φ = 42864320.

The previous prime is 65671069. The next prime is 65671097. The reversal of 65671071 is 17017656.

It is a cyclic number.

It is not a de Polignac number, because 65671071 - 2¹ = 65671069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65671271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54451 + ... + 55643.

It is an arithmetic number, because the mean of its divisors is an integer number (5587920).

Almost surely, 2^65671071 is an apocalyptic number.

65671071 is a deficient number, since it is larger than the sum of its proper divisors (23735649).

65671071 is a wasteful number, since it uses less digits than its factorization.

65671071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 65671071 is about 8103.7689379695. The cubic root of 65671071 is about 403.4515296120.

The spelling of 65671071 in words is "sixty-five million, six hundred seventy-one thousand, seventy-one".