86173673 has 2 divisors, whose sum is σ = 86173674. Its totient is φ = 86173672.

The previous prime is 86173669. The next prime is 86173729. The reversal of 86173673 is 37637168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72726784 + 13446889 = 8528^2 + 3667^2 .

It is a cyclic number.

It is not a de Polignac number, because 86173673 - 2² = 86173669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86173673.

It is not a weakly prime, because it can be changed into another prime (86173603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43086836 + 43086837.

It is an arithmetic number, because the mean of its divisors is an integer number (43086837).

Almost surely, 2^86173673 is an apocalyptic number.

It is an amenable number.

86173673 is a deficient number, since it is larger than the sum of its proper divisors (1).

86173673 is an equidigital number, since it uses as much as digits as its factorization.

86173673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 41.

The square root of 86173673 is about 9282.9775934234. The cubic root of 86173673 is about 441.6974257127.

The spelling of 86173673 in words is "eighty-six million, one hundred seventy-three thousand, six hundred seventy-three".