84078663 has 8 divisors (see below), whose sum is σ = 112724976. Its totient is φ = 55742400.

The previous prime is 84078619. The next prime is 84078703. The reversal of 84078663 is 36687048.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84078663 - 2¹⁰ = 84077639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84070663) 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 7 ways as a sum of consecutive naturals, for example, 76878 + ... + 77963.

It is an arithmetic number, because the mean of its divisors is an integer number (14090622).

Almost surely, 2^84078663 is an apocalyptic number.

84078663 is a deficient number, since it is larger than the sum of its proper divisors (28646313).

84078663 is a wasteful number, since it uses less digits than its factorization.

84078663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155025.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 84078663 is about 9169.4418041667. The cubic root of 84078663 is about 438.0885801121.

The spelling of 84078663 in words is "eighty-four million, seventy-eight thousand, six hundred sixty-three".