81106735 has 8 divisors (see below), whose sum is σ = 97397856. Its totient is φ = 64838880.

The previous prime is 81106709. The next prime is 81106741. The reversal of 81106735 is 53760118.

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

It is not a de Polignac number, because 81106735 - 2⁷ = 81106607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 81106697 and 81106706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3102 + ... + 13108.

It is an arithmetic number, because the mean of its divisors is an integer number (12174732).

Almost surely, 2^81106735 is an apocalyptic number.

81106735 is a deficient number, since it is larger than the sum of its proper divisors (16291121).

81106735 is a wasteful number, since it uses less digits than its factorization.

81106735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11633.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 81106735 is about 9005.9277700857. The cubic root of 81106735 is about 432.8648352176.

The spelling of 81106735 in words is "eighty-one million, one hundred six thousand, seven hundred thirty-five".