85663473 has 32 divisors (see below), whose sum is σ = 137383680. Its totient is φ = 46448640.

The previous prime is 85663471. The next prime is 85663483. The reversal of 85663473 is 37436658.

It is not a de Polignac number, because 85663473 - 2¹ = 85663471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85663471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30513 + ... + 33201.

It is an arithmetic number, because the mean of its divisors is an integer number (4293240).

Almost surely, 2^85663473 is an apocalyptic number.

It is an amenable number.

85663473 is a deficient number, since it is larger than the sum of its proper divisors (51720207).

85663473 is a wasteful number, since it uses less digits than its factorization.

85663473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777.

The product of its digits is 362880, while the sum is 42.

The square root of 85663473 is about 9255.4563906919. The cubic root of 85663473 is about 440.8239948406.

The spelling of 85663473 in words is "eighty-five million, six hundred sixty-three thousand, four hundred seventy-three".