81714807 has 24 divisors (see below), whose sum is σ = 120648528. Its totient is φ = 53280000.

The previous prime is 81714797. The next prime is 81714821. The reversal of 81714807 is 70841718.

81714807 is a `hidden beast` number, since 8 + 171 + 480 + 7 = 666.

It is not a de Polignac number, because 81714807 - 2⁸ = 81714551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81714827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137503 + ... + 138095.

It is an arithmetic number, because the mean of its divisors is an integer number (5027022).

Almost surely, 2^81714807 is an apocalyptic number.

81714807 is a deficient number, since it is larger than the sum of its proper divisors (38933721).

81714807 is a wasteful number, since it uses less digits than its factorization.

81714807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 908 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 81714807 is about 9039.6242731653. The cubic root of 81714807 is about 433.9438986145.

The spelling of 81714807 in words is "eighty-one million, seven hundred fourteen thousand, eight hundred seven".