71574164 has 24 divisors (see below), whose sum is σ = 131083008. Its totient is φ = 34153920.

The previous prime is 71574161. The next prime is 71574187. The reversal of 71574164 is 46147517.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71574161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5099 + ... + 13005.

It is an arithmetic number, because the mean of its divisors is an integer number (5461792).

Almost surely, 2^71574164 is an apocalyptic number.

It is an amenable number.

71574164 is a deficient number, since it is larger than the sum of its proper divisors (59508844).

71574164 is a wasteful number, since it uses less digits than its factorization.

71574164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8015 (or 8013 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 71574164 is about 8460.1515352859. The cubic root of 71574164 is about 415.1949807148.

The spelling of 71574164 in words is "seventy-one million, five hundred seventy-four thousand, one hundred sixty-four".