81763108 has 24 divisors (see below), whose sum is σ = 164820992. Its totient is φ = 34763904.

The previous prime is 81763079. The next prime is 81763109. The reversal of 81763108 is 80136718.

It is not an unprimeable number, because it can be changed into a prime (81763109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7941 + ... + 15052.

Almost surely, 2^81763108 is an apocalyptic number.

It is an amenable number.

81763108 is an abundant number, since it is smaller than the sum of its proper divisors (83057884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81763108 is a wasteful number, since it uses less digits than its factorization.

81763108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23131 (or 23129 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 81763108 is about 9042.2955050142. The cubic root of 81763108 is about 434.0293820849.

The spelling of 81763108 in words is "eighty-one million, seven hundred sixty-three thousand, one hundred eight".