86664165 has 64 divisors (see below), whose sum is σ = 163774464. Its totient is φ = 38320128.

The previous prime is 86664163. The next prime is 86664167. The reversal of 86664165 is 56146668.

It is an interprime number because it is at equal distance from previous prime (86664163) and next prime (86664167).

It is not a de Polignac number, because 86664165 - 2¹ = 86664163 is a prime.

It is a super-4 number, since 4×86664165⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86664163) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 682332 + ... + 682458.

It is an arithmetic number, because the mean of its divisors is an integer number (2558976).

Almost surely, 2^86664165 is an apocalyptic number.

It is an amenable number.

86664165 is a deficient number, since it is larger than the sum of its proper divisors (77110299).

86664165 is a wasteful number, since it uses less digits than its factorization.

86664165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306.

The product of its digits is 207360, while the sum is 42.

The square root of 86664165 is about 9309.3590004898. The cubic root of 86664165 is about 442.5338733685.

The spelling of 86664165 in words is "eighty-six million, six hundred sixty-four thousand, one hundred sixty-five".