80197866 has 48 divisors (see below), whose sum is σ = 199128384. Its totient is φ = 22851072.

The previous prime is 80197853. The next prime is 80197867. The reversal of 80197866 is 66879108.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (80197867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65290 + ... + 66506.

It is an arithmetic number, because the mean of its divisors is an integer number (4148508).

Almost surely, 2^80197866 is an apocalyptic number.

80197866 is an abundant number, since it is smaller than the sum of its proper divisors (118930518).

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

80197866 is a wasteful number, since it uses less digits than its factorization.

80197866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755 (or 1752 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 80197866 is about 8955.3261247148. The cubic root of 80197866 is about 431.2418866779.

The spelling of 80197866 in words is "eighty million, one hundred ninety-seven thousand, eight hundred sixty-six".