71540648 has 16 divisors (see below), whose sum is σ = 137258880. Its totient is φ = 34938288.

The previous prime is 71540611. The next prime is 71540669. The reversal of 71540648 is 84604517.

It is a super-3 number, since 3×71540648³ (a number of 25 digits) contains 333 as substring.

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 3 ways as a sum of consecutive naturals, for example, 103640 + ... + 104327.

It is an arithmetic number, because the mean of its divisors is an integer number (8578680).

Almost surely, 2^71540648 is an apocalyptic number.

It is an amenable number.

71540648 is a deficient number, since it is larger than the sum of its proper divisors (65718232).

71540648 is a wasteful number, since it uses less digits than its factorization.

71540648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208016 (or 208012 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 71540648 is about 8458.1704877592. The cubic root of 71540648 is about 415.1301628771.

The spelling of 71540648 in words is "seventy-one million, five hundred forty thousand, six hundred forty-eight".