81035069 has 16 divisors (see below), whose sum is σ = 85472640. Its totient is φ = 76749120.

The previous prime is 81035051. The next prime is 81035081. The reversal of 81035069 is 96053018.

It is a cyclic number.

It is not a de Polignac number, because 81035069 - 2⁸ = 81034813 is a prime.

It is a super-2 number, since 2×81035069² = 13133364815669522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81035869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286202 + ... + 286484.

It is an arithmetic number, because the mean of its divisors is an integer number (5342040).

Almost surely, 2^81035069 is an apocalyptic number.

It is an amenable number.

81035069 is a deficient number, since it is larger than the sum of its proper divisors (4437571).

81035069 is a wasteful number, since it uses less digits than its factorization.

81035069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 81035069 is about 9001.9480669464. The cubic root of 81035069 is about 432.7373043671.

The spelling of 81035069 in words is "eighty-one million, thirty-five thousand, sixty-nine".