81080696 has 8 divisors (see below), whose sum is σ = 152026320. Its totient is φ = 40540344.

The previous prime is 81080693. The next prime is 81080707. The reversal of 81080696 is 69608018.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81080693) 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 as a sum of consecutive naturals, namely, 5067536 + ... + 5067551.

It is an arithmetic number, because the mean of its divisors is an integer number (19003290).

Almost surely, 2^81080696 is an apocalyptic number.

It is an amenable number.

81080696 is a deficient number, since it is larger than the sum of its proper divisors (70945624).

81080696 is a wasteful number, since it uses less digits than its factorization.

81080696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10135093 (or 10135089 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 81080696 is about 9004.4819950956. The cubic root of 81080696 is about 432.8185070721.

The spelling of 81080696 in words is "eighty-one million, eighty thousand, six hundred ninety-six".