71145164 has 12 divisors (see below), whose sum is σ = 129917424. Its totient is φ = 34025904.

The previous prime is 71145163. The next prime is 71145181. The reversal of 71145164 is 46154117.

It is not an unprimeable number, because it can be changed into a prime (71145163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386567 + ... + 386750.

It is an arithmetic number, because the mean of its divisors is an integer number (10826452).

Almost surely, 2^71145164 is an apocalyptic number.

It is an amenable number.

71145164 is a deficient number, since it is larger than the sum of its proper divisors (58772260).

71145164 is a wasteful number, since it uses less digits than its factorization.

71145164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773344 (or 773342 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 71145164 is about 8434.7592733877. The cubic root of 71145164 is about 414.3637883093.

The spelling of 71145164 in words is "seventy-one million, one hundred forty-five thousand, one hundred sixty-four".