71539364 has 12 divisors (see below), whose sum is σ = 134824284. Its totient is φ = 33018144.

The previous prime is 71539271. The next prime is 71539367. The reversal of 71539364 is 46393517.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10824100 + 60715264 = 3290^2 + 7792^2 .

It is not an unprimeable number, because it can be changed into a prime (71539367) by changing a digit.

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, 687827 + ... + 687930.

It is an arithmetic number, because the mean of its divisors is an integer number (11235357).

Almost surely, 2^71539364 is an apocalyptic number.

It is an amenable number.

71539364 is a deficient number, since it is larger than the sum of its proper divisors (63284920).

71539364 is a wasteful number, since it uses less digits than its factorization.

71539364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375774 (or 1375772 counting only the distinct ones).

The product of its digits is 68040, while the sum is 38.

The square root of 71539364 is about 8458.0945844794. The cubic root of 71539364 is about 415.1276792992.

The spelling of 71539364 in words is "seventy-one million, five hundred thirty-nine thousand, three hundred sixty-four".