71840159 has 8 divisors (see below), whose sum is σ = 77466480. Its totient is φ = 66398400.

The previous prime is 71840141. The next prime is 71840239. The reversal of 71840159 is 95104817.

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

It is a cyclic number.

It is not a de Polignac number, because 71840159 - 2²⁰ = 70791583 is a prime.

It is a super-2 number, since 2×71840159² = 10322016890290562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71840129) 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, 45332 + ... + 46889.

It is an arithmetic number, because the mean of its divisors is an integer number (9683310).

Almost surely, 2^71840159 is an apocalyptic number.

71840159 is a deficient number, since it is larger than the sum of its proper divisors (5626321).

71840159 is a wasteful number, since it uses less digits than its factorization.

71840159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92281.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 71840159 is about 8475.8574197541. The cubic root of 71840159 is about 415.7086821835.

The spelling of 71840159 in words is "seventy-one million, eight hundred forty thousand, one hundred fifty-nine".