86804069 has 12 divisors (see below), whose sum is σ = 95704140. Its totient is φ = 78672000.

The previous prime is 86804051. The next prime is 86804077. The reversal of 86804069 is 96040868.

It can be written as a sum of positive squares in 2 ways, for example, as 84364225 + 2439844 = 9185^2 + 1562^2 .

It is a de Polignac number, because none of the positive numbers 2^k-86804069 is a prime.

It is a super-4 number, since 4×86804069⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86804869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47627 + ... + 49415.

It is an arithmetic number, because the mean of its divisors is an integer number (7975345).

Almost surely, 2^86804069 is an apocalyptic number.

It is an amenable number.

86804069 is a deficient number, since it is larger than the sum of its proper divisors (8900071).

86804069 is a wasteful number, since it uses less digits than its factorization.

86804069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212 (or 2201 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 86804069 is about 9316.8701289650. The cubic root of 86804069 is about 442.7718762901.

The spelling of 86804069 in words is "eighty-six million, eight hundred four thousand, sixty-nine".