71643014 has 4 divisors (see below), whose sum is σ = 107464524. Its totient is φ = 35821506.

The previous prime is 71643001. The next prime is 71643029. The reversal of 71643014 is 41034617.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17910752 + ... + 17910755.

It is an arithmetic number, because the mean of its divisors is an integer number (26866131).

Almost surely, 2^71643014 is an apocalyptic number.

71643014 is a deficient number, since it is larger than the sum of its proper divisors (35821510).

71643014 is a wasteful number, since it uses less digits than its factorization.

71643014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35821509.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 71643014 is about 8464.2196332562. The cubic root of 71643014 is about 415.3280688371.

The spelling of 71643014 in words is "seventy-one million, six hundred forty-three thousand, fourteen".