84065406 has 32 divisors (see below), whose sum is σ = 174337920. Its totient is φ = 27002016.

The previous prime is 84065389. The next prime is 84065411. The reversal of 84065406 is 60456048.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21985 + ... + 25523.

It is an arithmetic number, because the mean of its divisors is an integer number (5448060).

Almost surely, 2^84065406 is an apocalyptic number.

84065406 is an abundant number, since it is smaller than the sum of its proper divisors (90272514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84065406 is a wasteful number, since it uses less digits than its factorization.

84065406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3688.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 84065406 is about 9168.7188854278. The cubic root of 84065406 is about 438.0655538755.

The spelling of 84065406 in words is "eighty-four million, sixty-five thousand, four hundred six".