85806473 has 4 divisors (see below), whose sum is σ = 87260880. Its totient is φ = 84352068.

The previous prime is 85806467. The next prime is 85806493. The reversal of 85806473 is 37460858.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37460858 = 2 ⋅18730429.

It is a cyclic number.

It is not a de Polignac number, because 85806473 - 2¹⁰ = 85805449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85806473.

It is not an unprimeable number, because it can be changed into a prime (85806433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727115 + ... + 727232.

It is an arithmetic number, because the mean of its divisors is an integer number (21815220).

Almost surely, 2^85806473 is an apocalyptic number.

It is an amenable number.

85806473 is a deficient number, since it is larger than the sum of its proper divisors (1454407).

85806473 is a wasteful number, since it uses less digits than its factorization.

85806473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454406.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 85806473 is about 9263.1783422322. The cubic root of 85806473 is about 441.0691510109.

The spelling of 85806473 in words is "eighty-five million, eight hundred six thousand, four hundred seventy-three".