71057060 has 12 divisors (see below), whose sum is σ = 149219868. Its totient is φ = 28422816.

The previous prime is 71057033. The next prime is 71057069. The reversal of 71057060 is 6075017.

It can be written as a sum of positive squares in 2 ways, for example, as 8076964 + 62980096 = 2842^2 + 7936^2 .

It is not an unprimeable number, because it can be changed into a prime (71057069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1776407 + ... + 1776446.

It is an arithmetic number, because the mean of its divisors is an integer number (12434989).

Almost surely, 2^71057060 is an apocalyptic number.

It is an amenable number.

71057060 is an abundant number, since it is smaller than the sum of its proper divisors (78162808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71057060 is a wasteful number, since it uses less digits than its factorization.

71057060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3552862 (or 3552860 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 71057060 is about 8429.5349812430. The cubic root of 71057060 is about 414.1926724981.

The spelling of 71057060 in words is "seventy-one million, fifty-seven thousand, sixty".