84579785 has 8 divisors (see below), whose sum is σ = 103411080. Its totient is φ = 66386944.

The previous prime is 84579769. The next prime is 84579791. The reversal of 84579785 is 58797548.

It can be written as a sum of positive squares in 4 ways, for example, as 9653449 + 74926336 = 3107^2 + 8656^2 .

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 84579785 - 2⁴ = 84579769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159320 + ... + 159849.

It is an arithmetic number, because the mean of its divisors is an integer number (12926385).

Almost surely, 2^84579785 is an apocalyptic number.

It is an amenable number.

84579785 is a deficient number, since it is larger than the sum of its proper divisors (18831295).

84579785 is a wasteful number, since it uses less digits than its factorization.

84579785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319227.

The product of its digits is 2822400, while the sum is 53.

The square root of 84579785 is about 9196.7268634009. The cubic root of 84579785 is about 438.9572155072.

The spelling of 84579785 in words is "eighty-four million, five hundred seventy-nine thousand, seven hundred eighty-five".