85280641 has 4 divisors (see below), whose sum is σ = 85300992. Its totient is φ = 85260292.

The previous prime is 85280639. The next prime is 85280669. The reversal of 85280641 is 14608258.

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.

It is a cyclic number.

It is not a de Polignac number, because 85280641 - 2¹ = 85280639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85280597 and 85280606.

It is not an unprimeable number, because it can be changed into a prime (85280621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1321 + ... + 13126.

It is an arithmetic number, because the mean of its divisors is an integer number (21325248).

Almost surely, 2^85280641 is an apocalyptic number.

It is an amenable number.

85280641 is a deficient number, since it is larger than the sum of its proper divisors (20351).

85280641 is a wasteful number, since it uses less digits than its factorization.

85280641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20350.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 85280641 is about 9234.7518104170. The cubic root of 85280641 is about 440.1663300219.

Adding to 85280641 its reverse (14608258), we get a palindrome (99888899).

The spelling of 85280641 in words is "eighty-five million, two hundred eighty thousand, six hundred forty-one".