71107090 has 32 divisors (see below), whose sum is σ = 137763504. Its totient is φ = 26327040.

The previous prime is 71107051. The next prime is 71107093. The reversal of 71107090 is 9070117.

It can be written as a sum of positive squares in 8 ways, for example, as 3094081 + 68013009 = 1759^2 + 8247^2 .

It is not an unprimeable number, because it can be changed into a prime (71107093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6942 + ... + 13798.

Almost surely, 2^71107090 is an apocalyptic number.

71107090 is a deficient number, since it is larger than the sum of its proper divisors (66656414).

71107090 is a wasteful number, since it uses less digits than its factorization.

71107090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6942.

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

The square root of 71107090 is about 8432.5020011857. The cubic root of 71107090 is about 414.2898582338.

The spelling of 71107090 in words is "seventy-one million, one hundred seven thousand, ninety".