86180818 has 8 divisors (see below), whose sum is σ = 129338748. Its totient is φ = 43067904.

The previous prime is 86180813. The next prime is 86180819. The reversal of 86180818 is 81808168.

It can be written as a sum of positive squares in 2 ways, for example, as 75637809 + 10543009 = 8697^2 + 3247^2 .

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

It is a super-2 number, since 2×86180818² = 14854266782298248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86180813) 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 3 ways as a sum of consecutive naturals, for example, 5971 + ... + 14422.

Almost surely, 2^86180818 is an apocalyptic number.

86180818 is a deficient number, since it is larger than the sum of its proper divisors (43157930).

86180818 is a wasteful number, since it uses less digits than its factorization.

86180818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22508.

The product of its (nonzero) digits is 24576, while the sum is 40.

The square root of 86180818 is about 9283.3624296372. The cubic root of 86180818 is about 441.7096330021.

The spelling of 86180818 in words is "eighty-six million, one hundred eighty thousand, eight hundred eighteen".