81360907 has 8 divisors (see below), whose sum is σ = 85922960. Its totient is φ = 76826880.

The previous prime is 81360893. The next prime is 81360911. The reversal of 81360907 is 70906318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 81360907 - 2¹¹ = 81358859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81360947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 894 + ... + 12787.

It is an arithmetic number, because the mean of its divisors is an integer number (10740370).

Almost surely, 2^81360907 is an apocalyptic number.

81360907 is a deficient number, since it is larger than the sum of its proper divisors (4562053).

81360907 is a wasteful number, since it uses less digits than its factorization.

81360907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14013.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 81360907 is about 9020.0281041691. The cubic root of 81360907 is about 433.3165337997.

The spelling of 81360907 in words is "eighty-one million, three hundred sixty thousand, nine hundred seven".