71808014 has 4 divisors (see below), whose sum is σ = 107712024. Its totient is φ = 35904006.

The previous prime is 71808013. The next prime is 71808019. The reversal of 71808014 is 41080817.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41080817 = 127 ⋅323471.

It is a super-3 number, since 3×71808014³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71808013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17952002 + ... + 17952005.

It is an arithmetic number, because the mean of its divisors is an integer number (26928006).

Almost surely, 2^71808014 is an apocalyptic number.

71808014 is a deficient number, since it is larger than the sum of its proper divisors (35904010).

71808014 is a wasteful number, since it uses less digits than its factorization.

71808014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35904009.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 71808014 is about 8473.9609392539. The cubic root of 71808014 is about 415.6466697504.

The spelling of 71808014 in words is "seventy-one million, eight hundred eight thousand, fourteen".