80618 has 8 divisors (see below), whose sum is σ = 122148. Its totient is φ = 39904.

The previous prime is 80611. The next prime is 80621. The reversal of 80618 is 81608.

It can be written as a sum of positive squares in 2 ways, for example, as 80089 + 529 = 283^2 + 23^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 80593 and 80602.

It is not an unprimeable number, because it can be changed into a prime (80611) by changing a digit.

80618 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230 + ... + 462.

2⁸⁰⁶¹⁸ is an apocalyptic number.

80618 is a deficient number, since it is larger than the sum of its proper divisors (41530).

80618 is a wasteful number, since it uses less digits than its factorization.

80618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 80618 is about 283.9330907098. The cubic root of 80618 is about 43.1993627021.

Subtracting 80618 from its reverse (81608), we obtain a triangular number (990 = T₄₄).

The spelling of 80618 in words is "eighty thousand, six hundred eighteen".