71080646 has 16 divisors (see below), whose sum is σ = 131226144. Its totient is φ = 28119744.

The previous prime is 71080643. The next prime is 71080657. The reversal of 71080646 is 64608017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71080643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195095 + ... + 195458.

It is an arithmetic number, because the mean of its divisors is an integer number (8201634).

Almost surely, 2^71080646 is an apocalyptic number.

71080646 is a deficient number, since it is larger than the sum of its proper divisors (60145498).

71080646 is a wasteful number, since it uses less digits than its factorization.

71080646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390575.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 71080646 is about 8430.9338747259. The cubic root of 71080646 is about 414.2384951449.

The spelling of 71080646 in words is "seventy-one million, eighty thousand, six hundred forty-six".