84784067 has 4 divisors (see below), whose sum is σ = 84803280. Its totient is φ = 84764856.

The previous prime is 84783991. The next prime is 84784079. The reversal of 84784067 is 76048748.

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 84784067 - 2¹⁰ = 84783043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84784267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698 + ... + 13040.

It is an arithmetic number, because the mean of its divisors is an integer number (21200820).

Almost surely, 2^84784067 is an apocalyptic number.

84784067 is a deficient number, since it is larger than the sum of its proper divisors (19213).

84784067 is a wasteful number, since it uses less digits than its factorization.

84784067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19212.

The product of its (nonzero) digits is 301056, while the sum is 44.

The square root of 84784067 is about 9207.8263993192. The cubic root of 84784067 is about 439.3103296771.

The spelling of 84784067 in words is "eighty-four million, seven hundred eighty-four thousand, sixty-seven".