71976713 has 4 divisors (see below), whose sum is σ = 72183300. Its totient is φ = 71770128.

The previous prime is 71976679. The next prime is 71976719. The reversal of 71976713 is 31767917.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31767917 = 17 ⋅1868701.

It can be written as a sum of positive squares in 2 ways, for example, as 65885689 + 6091024 = 8117^2 + 2468^2 .

It is a cyclic number.

It is not a de Polignac number, because 71976713 - 2¹² = 71972617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71976719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102770 + ... + 103467.

It is an arithmetic number, because the mean of its divisors is an integer number (18045825).

Almost surely, 2^71976713 is an apocalyptic number.

It is an amenable number.

71976713 is a deficient number, since it is larger than the sum of its proper divisors (206587).

71976713 is a wasteful number, since it uses less digits than its factorization.

71976713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206586.

The product of its digits is 55566, while the sum is 41.

The square root of 71976713 is about 8483.9090636333. The cubic root of 71976713 is about 415.9719089297.

The spelling of 71976713 in words is "seventy-one million, nine hundred seventy-six thousand, seven hundred thirteen".