84785545 has 24 divisors (see below), whose sum is σ = 116434584. Its totient is φ = 58715136.

The previous prime is 84785513. The next prime is 84785549. The reversal of 84785545 is 54558748.

It can be written as a sum of positive squares in 12 ways, for example, as 49406841 + 35378704 = 7029^2 + 5948^2 .

It is not a de Polignac number, because 84785545 - 2⁵ = 84785513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84785495 and 84785504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84785549) 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 23 ways as a sum of consecutive naturals, for example, 305947 + ... + 306223.

It is an arithmetic number, because the mean of its divisors is an integer number (4851441).

Almost surely, 2^84785545 is an apocalyptic number.

84785545 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

84785545 is a deficient number, since it is larger than the sum of its proper divisors (31649039).

84785545 is a wasteful number, since it uses less digits than its factorization.

84785545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589 (or 312 counting only the distinct ones).

The product of its digits is 896000, while the sum is 46.

The square root of 84785545 is about 9207.9066567814. The cubic root of 84785545 is about 439.3128824244.

The spelling of 84785545 in words is "eighty-four million, seven hundred eighty-five thousand, five hundred forty-five".