71090365 has 8 divisors (see below), whose sum is σ = 86153688. Its totient is φ = 56308800.

The previous prime is 71090359. The next prime is 71090399. The reversal of 71090365 is 56309017.

It can be written as a sum of positive squares in 4 ways, for example, as 36445369 + 34644996 = 6037^2 + 5886^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71090365 - 2⁵ = 71090333 is a prime.

It is a super-3 number, since 3×71090365³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 69882 + ... + 70891.

It is an arithmetic number, because the mean of its divisors is an integer number (10769211).

Almost surely, 2^71090365 is an apocalyptic number.

It is an amenable number.

71090365 is a deficient number, since it is larger than the sum of its proper divisors (15063323).

71090365 is a wasteful number, since it uses less digits than its factorization.

71090365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140879.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 71090365 is about 8431.5102443157. The cubic root of 71090365 is about 414.2573741726.

The spelling of 71090365 in words is "seventy-one million, ninety thousand, three hundred sixty-five".