84205663 has 8 divisors (see below), whose sum is σ = 88873200. Its totient is φ = 79561728.

The previous prime is 84205657. The next prime is 84205687. The reversal of 84205663 is 36650248.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 84205663 - 2⁵ = 84205631 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 (84205633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1695 + ... + 13087.

It is an arithmetic number, because the mean of its divisors is an integer number (11109150).

Almost surely, 2^84205663 is an apocalyptic number.

84205663 is a deficient number, since it is larger than the sum of its proper divisors (4667537).

84205663 is a wasteful number, since it uses less digits than its factorization.

84205663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11801.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 84205663 is about 9176.3643672208. The cubic root of 84205663 is about 438.3090453209.

The spelling of 84205663 in words is "eighty-four million, two hundred five thousand, six hundred sixty-three".