86664665 has 8 divisors (see below), whose sum is σ = 104146560. Its totient is φ = 69232432.

The previous prime is 86664661. The next prime is 86664671. The reversal of 86664665 is 56646668.

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

It is a cyclic number.

It is not a de Polignac number, because 86664665 - 2² = 86664661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86664661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8459 + ... + 15648.

It is an arithmetic number, because the mean of its divisors is an integer number (13018320).

Almost surely, 2^86664665 is an apocalyptic number.

It is an amenable number.

86664665 is a deficient number, since it is larger than the sum of its proper divisors (17481895).

86664665 is a wasteful number, since it uses less digits than its factorization.

86664665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24831.

The product of its digits is 1244160, while the sum is 47.

The square root of 86664665 is about 9309.3858551464. The cubic root of 86664665 is about 442.5347244181.

It can be divided in two parts, 8666 and 4665, that added together give a palindrome (13331).

The spelling of 86664665 in words is "eighty-six million, six hundred sixty-four thousand, six hundred sixty-five".