86642118 has 12 divisors (see below), whose sum is σ = 187724628. Its totient is φ = 28880700.

The previous prime is 86642107. The next prime is 86642131. The reversal of 86642118 is 81124668.

86642118 is a `hidden beast` number, since 8 + 6 + 642 + 1 + 1 + 8 = 666.

It is a super-2 number, since 2×86642118² = 15013713223051848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2406708 + ... + 2406743.

It is an arithmetic number, because the mean of its divisors is an integer number (15643719).

Almost surely, 2^86642118 is an apocalyptic number.

86642118 is an abundant number, since it is smaller than the sum of its proper divisors (101082510).

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

86642118 is a wasteful number, since it uses less digits than its factorization.

86642118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4813459 (or 4813456 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 86642118 is about 9308.1747942333. The cubic root of 86642118 is about 442.4963439323.

The spelling of 86642118 in words is "eighty-six million, six hundred forty-two thousand, one hundred eighteen".