71140648 has 16 divisors (see below), whose sum is σ = 141235380. Its totient is φ = 33477888.

The previous prime is 71140639. The next prime is 71140697. The reversal of 71140648 is 84604117.

It can be written as a sum of positive squares in 2 ways, for example, as 59320804 + 11819844 = 7702^2 + 3438^2 .

It is a super-3 number, since 3×71140648³ (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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261411 + ... + 261682.

Almost surely, 2^71140648 is an apocalyptic number.

It is an amenable number.

71140648 is a deficient number, since it is larger than the sum of its proper divisors (70094732).

71140648 is a wasteful number, since it uses less digits than its factorization.

71140648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523116 (or 523112 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 71140648 is about 8434.4915673679. The cubic root of 71140648 is about 414.3550207587.

The spelling of 71140648 in words is "seventy-one million, one hundred forty thousand, six hundred forty-eight".