81469075 has 6 divisors (see below), whose sum is σ = 101021684. Its totient is φ = 65175240.

The previous prime is 81469067. The next prime is 81469081. The reversal of 81469075 is 57096418.

It is not a de Polignac number, because 81469075 - 2³ = 81469067 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1629357 + ... + 1629406.

Almost surely, 2^81469075 is an apocalyptic number.

81469075 is a deficient number, since it is larger than the sum of its proper divisors (19552609).

81469075 is a wasteful number, since it uses less digits than its factorization.

81469075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258773 (or 3258768 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 81469075 is about 9026.0221027870. The cubic root of 81469075 is about 433.5084778528.

The spelling of 81469075 in words is "eighty-one million, four hundred sixty-nine thousand, seventy-five".