84945845 has 8 divisors (see below), whose sum is σ = 102004920. Its totient is φ = 67910080.

The previous prime is 84945841. The next prime is 84945863. The reversal of 84945845 is 54854948.

It can be written as a sum of positive squares in 4 ways, for example, as 4502884 + 80442961 = 2122^2 + 8969^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84945845 - 2² = 84945841 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 84945845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84945841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3575 + ... + 13515.

It is an arithmetic number, because the mean of its divisors is an integer number (12750615).

Almost surely, 2^84945845 is an apocalyptic number.

It is an amenable number.

84945845 is a deficient number, since it is larger than the sum of its proper divisors (17059075).

84945845 is a wasteful number, since it uses less digits than its factorization.

84945845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11655.

The product of its digits is 921600, while the sum is 47.

The square root of 84945845 is about 9216.6070221096. The cubic root of 84945845 is about 439.5895707857.

The spelling of 84945845 in words is "eighty-four million, nine hundred forty-five thousand, eight hundred forty-five".