86173697 has 8 divisors (see below), whose sum is σ = 91477512. Its totient is φ = 80896000.

The previous prime is 86173673. The next prime is 86173729. The reversal of 86173697 is 79637168.

It can be written as a sum of positive squares in 4 ways, for example, as 19571776 + 66601921 = 4424^2 + 8161^2 .

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 86173697 - 2⁸ = 86173441 is a prime.

It is a super-3 number, since 3×86173697³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86173657) 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, 497 + ... + 13137.

It is an arithmetic number, because the mean of its divisors is an integer number (11434689).

Almost surely, 2^86173697 is an apocalyptic number.

It is an amenable number.

86173697 is a deficient number, since it is larger than the sum of its proper divisors (5303815).

86173697 is a wasteful number, since it uses less digits than its factorization.

86173697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13059.

The product of its digits is 381024, while the sum is 47.

The square root of 86173697 is about 9282.9788861119. The cubic root of 86173697 is about 441.6974667180.

The spelling of 86173697 in words is "eighty-six million, one hundred seventy-three thousand, six hundred ninety-seven".