85280563 has 8 divisors (see below), whose sum is σ = 85930416. Its totient is φ = 84633600.

The previous prime is 85280537. The next prime is 85280581. The reversal of 85280563 is 36508258.

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 85280563 - 2²¹ = 83183411 is a prime.

It is a super-3 number, since 3×85280563³ (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 (85281563) 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 7 ways as a sum of consecutive naturals, for example, 132723 + ... + 133363.

It is an arithmetic number, because the mean of its divisors is an integer number (10741302).

Almost surely, 2^85280563 is an apocalyptic number.

85280563 is a deficient number, since it is larger than the sum of its proper divisors (649853).

85280563 is a wasteful number, since it uses less digits than its factorization.

85280563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 85280563 is about 9234.7475872381. The cubic root of 85280563 is about 440.1661958258.

The spelling of 85280563 in words is "eighty-five million, two hundred eighty thousand, five hundred sixty-three".