71485984 has 12 divisors (see below), whose sum is σ = 140738094. Its totient is φ = 35742976.

The previous prime is 71485979. The next prime is 71485987. The reversal of 71485984 is 48958417.

It can be written as a sum of positive squares in only one way, i.e., 54346384 + 17139600 = 7372^2 + 4140^2 .

It is a super-2 number, since 2×71485984² = 10220491816896512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71485987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1116937 + ... + 1117000.

Almost surely, 2^71485984 is an apocalyptic number.

It is an amenable number.

71485984 is a deficient number, since it is larger than the sum of its proper divisors (69252110).

71485984 is a wasteful number, since it uses less digits than its factorization.

71485984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233947 (or 2233939 counting only the distinct ones).

The product of its digits is 322560, while the sum is 46.

The square root of 71485984 is about 8454.9384385695. The cubic root of 71485984 is about 415.0244026876.

The spelling of 71485984 in words is "seventy-one million, four hundred eighty-five thousand, nine hundred eighty-four".