84064523 has 4 divisors (see below), whose sum is σ = 84174048. Its totient is φ = 83955000.

The previous prime is 84064501. The next prime is 84064543. The reversal of 84064523 is 32546048.

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

It is a cyclic number.

It is not a de Polignac number, because 84064523 - 2¹⁸ = 83802379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84064523.

It is not an unprimeable number, because it can be changed into a prime (84064543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53603 + ... + 55148.

It is an arithmetic number, because the mean of its divisors is an integer number (21043512).

Almost surely, 2^84064523 is an apocalyptic number.

84064523 is a deficient number, since it is larger than the sum of its proper divisors (109525).

84064523 is a wasteful number, since it uses less digits than its factorization.

84064523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109524.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 84064523 is about 9168.6707324454. The cubic root of 84064523 is about 438.0640200966.

The spelling of 84064523 in words is "eighty-four million, sixty-four thousand, five hundred twenty-three".