90906 has 16 divisors (see below), whose sum is σ = 184800. Its totient is φ = 29808.
The previous prime is 90901. The next prime is 90907. The reversal of 90906 is 60909.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (90901) 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, 585 + ... + 723.
It is an arithmetic number, because the mean of its divisors is an integer number (11550).
290906 is an apocalyptic number.
90906 is an abundant number, since it is smaller than the sum of its proper divisors (93894).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92400).
90906 is a wasteful number, since it uses less digits than its factorization.
90906 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 253.
The product of its (nonzero) digits is 486, while the sum is 24.
The square root of 90906 is about 301.5062188413. The cubic root of 90906 is about 44.9639216996.
The spelling of 90906 in words is "ninety thousand, nine hundred six".
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