86711666 has 4 divisors (see below), whose sum is σ = 130067502. Its totient is φ = 43355832.

The previous prime is 86711659. The next prime is 86711689. The reversal of 86711666 is 66611768.

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., 81090025 + 5621641 = 9005^2 + 2371^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21677915 + ... + 21677918.

Almost surely, 2^86711666 is an apocalyptic number.

86711666 is a deficient number, since it is larger than the sum of its proper divisors (43355836).

86711666 is a wasteful number, since it uses less digits than its factorization.

86711666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43355835.

The product of its digits is 72576, while the sum is 41.

The square root of 86711666 is about 9311.9099007669. The cubic root of 86711666 is about 442.6147101717.

The spelling of 86711666 in words is "eighty-six million, seven hundred eleven thousand, six hundred sixty-six".