80498865 has 16 divisors (see below), whose sum is σ = 132280128. Its totient is φ = 41772096.

The previous prime is 80498861. The next prime is 80498879. The reversal of 80498865 is 56889408.

It is not a de Polignac number, because 80498865 - 2² = 80498861 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80498861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71967 + ... + 73076.

It is an arithmetic number, because the mean of its divisors is an integer number (8267508).

Almost surely, 2^80498865 is an apocalyptic number.

It is an amenable number.

80498865 is a deficient number, since it is larger than the sum of its proper divisors (51781263).

80498865 is a wasteful number, since it uses less digits than its factorization.

80498865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145088.

The product of its (nonzero) digits is 552960, while the sum is 48.

The square root of 80498865 is about 8972.1159711631. The cubic root of 80498865 is about 431.7807261258.

The spelling of 80498865 in words is "eighty million, four hundred ninety-eight thousand, eight hundred sixty-five".