84064571 has 4 divisors (see below), whose sum is σ = 84122592. Its totient is φ = 84006552.

The previous prime is 84064543. The next prime is 84064573. The reversal of 84064571 is 17546048.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84064571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84064573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26780 + ... + 29753.

It is an arithmetic number, because the mean of its divisors is an integer number (21030648).

Almost surely, 2^84064571 is an apocalyptic number.

84064571 is a deficient number, since it is larger than the sum of its proper divisors (58021).

84064571 is a wasteful number, since it uses less digits than its factorization.

84064571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58020.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 84064571 is about 9168.6733500545. The cubic root of 84064571 is about 438.0641034733.

The spelling of 84064571 in words is "eighty-four million, sixty-four thousand, five hundred seventy-one".