86537818 has 8 divisors (see below), whose sum is σ = 136638720. Its totient is φ = 40991580.

The previous prime is 86537809. The next prime is 86537821. The reversal of 86537818 is 81873568.

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

It is a super-2 number, since 2×86537818² = 14977587888402248, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1138618 + ... + 1138693.

It is an arithmetic number, because the mean of its divisors is an integer number (17079840).

Almost surely, 2^86537818 is an apocalyptic number.

86537818 is a deficient number, since it is larger than the sum of its proper divisors (50100902).

86537818 is a wasteful number, since it uses less digits than its factorization.

86537818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277332.

The product of its digits is 322560, while the sum is 46.

The square root of 86537818 is about 9302.5705049733. The cubic root of 86537818 is about 442.3187132311.

It can be divided in two parts, 8653 and 7818, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 86537818 in words is "eighty-six million, five hundred thirty-seven thousand, eight hundred eighteen".