84020006 has 12 divisors (see below), whose sum is σ = 146606508. Its totient is φ = 36008532.

The previous prime is 84019993. The next prime is 84020009. The reversal of 84020006 is 60002048.

It is a super-2 number, since 2×84020006² = 14118722816480072, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 84020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84020009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 428576 + ... + 428771.

It is an arithmetic number, because the mean of its divisors is an integer number (12217209).

Almost surely, 2^84020006 is an apocalyptic number.

84020006 is a deficient number, since it is larger than the sum of its proper divisors (62586502).

84020006 is a wasteful number, since it uses less digits than its factorization.

84020006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857363 (or 857356 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 84020006 is about 9166.2427417127. The cubic root of 84020006 is about 437.9866797448.

The spelling of 84020006 in words is "eighty-four million, twenty thousand, six".