80712618 has 16 divisors (see below), whose sum is σ = 184486080. Its totient is φ = 23060736.

The previous prime is 80712613. The next prime is 80712629. The reversal of 80712618 is 81621708.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80712613) 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, 960823 + ... + 960906.

It is an arithmetic number, because the mean of its divisors is an integer number (11530380).

Almost surely, 2^80712618 is an apocalyptic number.

80712618 is an abundant number, since it is smaller than the sum of its proper divisors (103773462).

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

80712618 is a wasteful number, since it uses less digits than its factorization.

80712618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921741.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 80712618 is about 8984.0201469053. The cubic root of 80712618 is about 432.1625652751.

The spelling of 80712618 in words is "eighty million, seven hundred twelve thousand, six hundred eighteen".