71671064 has 16 divisors (see below), whose sum is σ = 139017600. Its totient is φ = 34599712.

The previous prime is 71671057. The next prime is 71671073. The reversal of 71671064 is 46017617.

It is a happy number.

It is a super-4 number, since 4×71671064⁴ (a number of 33 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71671064.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154232 + ... + 154695.

It is an arithmetic number, because the mean of its divisors is an integer number (8688600).

Almost surely, 2^71671064 is an apocalyptic number.

It is an amenable number.

71671064 is a deficient number, since it is larger than the sum of its proper divisors (67346536).

71671064 is a wasteful number, since it uses less digits than its factorization.

71671064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308962 (or 308958 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 71671064 is about 8465.8764460627. The cubic root of 71671064 is about 415.3822654786.

The spelling of 71671064 in words is "seventy-one million, six hundred seventy-one thousand, sixty-four".