81341737 has 8 divisors (see below), whose sum is σ = 84526592. Its totient is φ = 78192000.

The previous prime is 81341683. The next prime is 81341747. The reversal of 81341737 is 73714318.

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 81341737 - 2²³ = 72953129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81341747) 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, 4008 + ... + 13369.

It is an arithmetic number, because the mean of its divisors is an integer number (10565824).

Almost surely, 2^81341737 is an apocalyptic number.

It is an amenable number.

81341737 is a deficient number, since it is larger than the sum of its proper divisors (3184855).

81341737 is a wasteful number, since it uses less digits than its factorization.

81341737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17559.

The product of its digits is 14112, while the sum is 34.

The square root of 81341737 is about 9018.9654062980. The cubic root of 81341737 is about 433.2824989021.

The spelling of 81341737 in words is "eighty-one million, three hundred forty-one thousand, seven hundred thirty-seven".