71575065 has 24 divisors (see below), whose sum is σ = 124268040. Its totient is φ = 38110464.

The previous prime is 71575061. The next prime is 71575073. The reversal of 71575065 is 56057517.

It can be written as a sum of positive squares in 4 ways, for example, as 6110784 + 65464281 = 2472^2 + 8091^2 .

It is not a de Polignac number, because 71575065 - 2² = 71575061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71575061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42051 + ... + 43719.

It is an arithmetic number, because the mean of its divisors is an integer number (5177835).

Almost surely, 2^71575065 is an apocalyptic number.

It is an amenable number.

71575065 is a deficient number, since it is larger than the sum of its proper divisors (52692975).

71575065 is a wasteful number, since it uses less digits than its factorization.

71575065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633 (or 2630 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 36.

The square root of 71575065 is about 8460.2047847555. The cubic root of 71575065 is about 415.1967229129.

The spelling of 71575065 in words is "seventy-one million, five hundred seventy-five thousand, sixty-five".