71170090 has 16 divisors (see below), whose sum is σ = 128426760. Its totient is φ = 28396800.

The previous prime is 71170063. The next prime is 71170091. The reversal of 71170090 is 9007117.

It can be written as a sum of positive squares in 4 ways, for example, as 69006249 + 2163841 = 8307^2 + 1471^2 .

It is not an unprimeable number, because it can be changed into a prime (71170091) 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, 4611 + ... + 12790.

Almost surely, 2^71170090 is an apocalyptic number.

71170090 is a deficient number, since it is larger than the sum of its proper divisors (57256670).

71170090 is a wasteful number, since it uses less digits than its factorization.

71170090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17817.

The product of its (nonzero) digits is 441, while the sum is 25.

The square root of 71170090 is about 8436.2367202444. The cubic root of 71170090 is about 414.4121740099.

The spelling of 71170090 in words is "seventy-one million, one hundred seventy thousand, ninety".