81716701 has 8 divisors (see below), whose sum is σ = 93837600. Its totient is φ = 70377840.

The previous prime is 81716699. The next prime is 81716749. The reversal of 81716701 is 10761718.

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 81716701 - 2¹ = 81716699 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81746701) 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, 195286 + ... + 195703.

It is an arithmetic number, because the mean of its divisors is an integer number (11729700).

Almost surely, 2^81716701 is an apocalyptic number.

It is an amenable number.

81716701 is a deficient number, since it is larger than the sum of its proper divisors (12120899).

81716701 is a wasteful number, since it uses less digits than its factorization.

81716701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391019.

The product of its (nonzero) digits is 2352, while the sum is 31.

The square root of 81716701 is about 9039.7290335496. The cubic root of 81716701 is about 433.9472512643.

The spelling of 81716701 in words is "eighty-one million, seven hundred sixteen thousand, seven hundred one".