71110657 has 6 divisors (see below), whose sum is σ = 71597058. Its totient is φ = 70625664.

The previous prime is 71110631. The next prime is 71110679. The reversal of 71110657 is 75601117.

It can be written as a sum of positive squares in only one way, i.e., 53056656 + 18054001 = 7284^2 + 4249^2 .

It is a de Polignac number, because none of the positive numbers 2^k-71110657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71110607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 116848 + ... + 117454.

It is an arithmetic number, because the mean of its divisors is an integer number (11932843).

Almost surely, 2^71110657 is an apocalyptic number.

It is an amenable number.

71110657 is a deficient number, since it is larger than the sum of its proper divisors (486401).

71110657 is an frugal number, since it uses more digits than its factorization.

71110657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 28.

The square root of 71110657 is about 8432.7135015960. The cubic root of 71110657 is about 414.2967855656.

The spelling of 71110657 in words is "seventy-one million, one hundred ten thousand, six hundred fifty-seven".