90861066 has 12 divisors (see below), whose sum is σ = 196865682. Its totient is φ = 30287016.

The previous prime is 90861053. The next prime is 90861077. The reversal of 90861066 is 66016809.

It can be written as a sum of positive squares in only one way, i.e., 86881041 + 3980025 = 9321^2 + 1995^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90861066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2523901 + ... + 2523936.

Almost surely, 2^90861066 is an apocalyptic number.

90861066 is an abundant number, since it is smaller than the sum of its proper divisors (106004616).

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

90861066 is a wasteful number, since it uses less digits than its factorization.

90861066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5047845 (or 5047842 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 90861066 is about 9532.1071122811. The cubic root of 90861066 is about 449.5651206093.

The spelling of 90861066 in words is "ninety million, eight hundred sixty-one thousand, sixty-six".