71646068 has 48 divisors (see below), whose sum is σ = 138756240. Its totient is φ = 32169984.

The previous prime is 71646059. The next prime is 71646073. The reversal of 71646068 is 86064617.

It can be written as a sum of positive squares in 8 ways, for example, as 25786084 + 45859984 = 5078^2 + 6772^2 .

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 522896 + ... + 523032.

It is an arithmetic number, because the mean of its divisors is an integer number (2890755).

Almost surely, 2^71646068 is an apocalyptic number.

It is an amenable number.

71646068 is a deficient number, since it is larger than the sum of its proper divisors (67110172).

71646068 is a wasteful number, since it uses less digits than its factorization.

71646068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 71646068 is about 8464.4000378054. The cubic root of 71646068 is about 415.3339702913. Note that the first 3 decimals are identical.

The spelling of 71646068 in words is "seventy-one million, six hundred forty-six thousand, sixty-eight".