81713417 has 8 divisors (see below), whose sum is σ = 83081376. Its totient is φ = 80354752.

The previous prime is 81713393. The next prime is 81713431. The reversal of 81713417 is 71431718.

It is a happy number.

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 81713417 - 2⁸ = 81713161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81703417) 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, 16673 + ... + 21009.

It is an arithmetic number, because the mean of its divisors is an integer number (10385172).

Almost surely, 2^81713417 is an apocalyptic number.

It is an amenable number.

81713417 is a deficient number, since it is larger than the sum of its proper divisors (1367959).

81713417 is a wasteful number, since it uses less digits than its factorization.

81713417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4647.

The product of its digits is 4704, while the sum is 32.

The square root of 81713417 is about 9039.5473891119. The cubic root of 81713417 is about 433.9414380835.

The spelling of 81713417 in words is "eighty-one million, seven hundred thirteen thousand, four hundred seventeen".