84385775 has 6 divisors (see below), whose sum is σ = 104638392. Its totient is φ = 67508600.

The previous prime is 84385771. The next prime is 84385787. The reversal of 84385775 is 57758348.

It is a happy number.

It is not a de Polignac number, because 84385775 - 2² = 84385771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84385771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1687691 + ... + 1687740.

It is an arithmetic number, because the mean of its divisors is an integer number (17439732).

Almost surely, 2^84385775 is an apocalyptic number.

84385775 is a deficient number, since it is larger than the sum of its proper divisors (20252617).

84385775 is a wasteful number, since it uses less digits than its factorization.

84385775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3375441 (or 3375436 counting only the distinct ones).

The product of its digits is 940800, while the sum is 47.

The square root of 84385775 is about 9186.1730334237. The cubic root of 84385775 is about 438.6213303320.

The spelling of 84385775 in words is "eighty-four million, three hundred eighty-five thousand, seven hundred seventy-five".