86071618 has 4 divisors (see below), whose sum is σ = 129107430. Its totient is φ = 43035808.

The previous prime is 86071607. The next prime is 86071621. The reversal of 86071618 is 81617068.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 43652449 + 42419169 = 6607^2 + 6513^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21517903 + ... + 21517906.

Almost surely, 2^86071618 is an apocalyptic number.

86071618 is a deficient number, since it is larger than the sum of its proper divisors (43035812).

86071618 is a wasteful number, since it uses less digits than its factorization.

86071618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43035811.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 86071618 is about 9277.4790756972. The cubic root of 86071618 is about 441.5229902349.

The spelling of 86071618 in words is "eighty-six million, seventy-one thousand, six hundred eighteen".