86704645 has 4 divisors (see below), whose sum is σ = 104045580. Its totient is φ = 69363712.

The previous prime is 86704643. The next prime is 86704699. The reversal of 86704645 is 54640768.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20802721 + 65901924 = 4561^2 + 8118^2 .

It is a cyclic number.

It is not a de Polignac number, because 86704645 - 2¹ = 86704643 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 86704598 and 86704607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86704643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8670460 + ... + 8670469.

It is an arithmetic number, because the mean of its divisors is an integer number (26011395).

Almost surely, 2^86704645 is an apocalyptic number.

It is an amenable number.

86704645 is a deficient number, since it is larger than the sum of its proper divisors (17340935).

86704645 is a wasteful number, since it uses less digits than its factorization.

86704645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17340934.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 86704645 is about 9311.5329028039. The cubic root of 86704645 is about 442.6027637524.

The spelling of 86704645 in words is "eighty-six million, seven hundred four thousand, six hundred forty-five".