84785641 has 4 divisors (see below), whose sum is σ = 84885892. Its totient is φ = 84685392.

The previous prime is 84785639. The next prime is 84785653. The reversal of 84785641 is 14658748.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19175641 + 65610000 = 4379^2 + 8100^2 .

It is a cyclic number.

It is not a de Polignac number, because 84785641 - 2¹ = 84785639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84785621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48846 + ... + 50551.

It is an arithmetic number, because the mean of its divisors is an integer number (21221473).

Almost surely, 2^84785641 is an apocalyptic number.

It is an amenable number.

84785641 is a deficient number, since it is larger than the sum of its proper divisors (100251).

84785641 is an equidigital number, since it uses as much as digits as its factorization.

84785641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100250.

The product of its digits is 215040, while the sum is 43.

The square root of 84785641 is about 9207.9118696912. The cubic root of 84785641 is about 439.3130482310.

The spelling of 84785641 in words is "eighty-four million, seven hundred eighty-five thousand, six hundred forty-one".