71671316 has 12 divisors (see below), whose sum is σ = 125854932. Its totient is φ = 35712768.

The previous prime is 71671309. The next prime is 71671351. The reversal of 71671316 is 61317617.

It can be written as a sum of positive squares in 2 ways, for example, as 69722500 + 1948816 = 8350^2 + 1396^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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, 29405 + ... + 31748.

It is an arithmetic number, because the mean of its divisors is an integer number (10487911).

Almost surely, 2^71671316 is an apocalyptic number.

It is an amenable number.

71671316 is a deficient number, since it is larger than the sum of its proper divisors (54183616).

71671316 is a wasteful number, since it uses less digits than its factorization.

71671316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61450 (or 61448 counting only the distinct ones).

The product of its digits is 5292, while the sum is 32.

The square root of 71671316 is about 8465.8913293285. The cubic root of 71671316 is about 415.3827523148.

The spelling of 71671316 in words is "seventy-one million, six hundred seventy-one thousand, three hundred sixteen".