86501218 has 8 divisors (see below), whose sum is σ = 130195548. Its totient is φ = 43102704.

The previous prime is 86501209. The next prime is 86501231. The reversal of 86501218 is 81210568.

It can be written as a sum of positive squares in 2 ways, for example, as 79441569 + 7059649 = 8913^2 + 2657^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 86501218.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73221 + ... + 74392.

Almost surely, 2^86501218 is an apocalyptic number.

86501218 is a deficient number, since it is larger than the sum of its proper divisors (43694330).

86501218 is a wasteful number, since it uses less digits than its factorization.

86501218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147908.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 86501218 is about 9300.6030987243. The cubic root of 86501218 is about 442.2563468649.

The spelling of 86501218 in words is "eighty-six million, five hundred one thousand, two hundred eighteen".