90660306 has 64 divisors (see below), whose sum is σ = 207323136. Its totient is φ = 26179200.

The previous prime is 90660299. The next prime is 90660329. The reversal of 90660306 is 60306609.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149055 + ... + 149661.

It is an arithmetic number, because the mean of its divisors is an integer number (3239424).

Almost surely, 2^90660306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90660306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103661568).

90660306 is an abundant number, since it is smaller than the sum of its proper divisors (116662830).

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

90660306 is a wasteful number, since it uses less digits than its factorization.

90660306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 90660306 is about 9521.5705637253. The cubic root of 90660306 is about 449.2337676521.

The spelling of 90660306 in words is "ninety million, six hundred sixty thousand, three hundred six".