90612 has 24 divisors (see below), whose sum is σ = 235200. Its totient is φ = 30168.
The previous prime is 90599. The next prime is 90617. The reversal of 90612 is 21609.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (90617) 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, 312 + ... + 527.
It is an arithmetic number, because the mean of its divisors is an integer number (9800).
290612 is an apocalyptic number.
It is an amenable number.
90612 is an abundant number, since it is smaller than the sum of its proper divisors (144588).
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 (117600).
90612 is a wasteful number, since it uses less digits than its factorization.
90612 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 852 (or 844 counting only the distinct ones).
The product of its (nonzero) digits is 108, while the sum is 18.
The square root of 90612 is about 301.0182718707. The cubic root of 90612 is about 44.9153965944.
The spelling of 90612 in words is "ninety thousand, six hundred twelve".
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