81070096 has 10 divisors (see below), whose sum is σ = 157073342. Its totient is φ = 40535040.

The previous prime is 81070063. The next prime is 81070097. The reversal of 81070096 is 69007018.

It can be written as a sum of positive squares in only one way, i.e., 76317696 + 4752400 = 8736^2 + 2180^2 .

It is not an unprimeable number, because it can be changed into a prime (81070097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2533425 + ... + 2533456.

Almost surely, 2^81070096 is an apocalyptic number.

It is an amenable number.

81070096 is a deficient number, since it is larger than the sum of its proper divisors (76003246).

81070096 is a wasteful number, since it uses less digits than its factorization.

81070096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5066889 (or 5066883 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 81070096 is about 9003.8933800884. The cubic root of 81070096 is about 432.7996448918.

The spelling of 81070096 in words is "eighty-one million, seventy thousand, ninety-six".