90006858 has 12 divisors (see below), whose sum is σ = 195014898. Its totient is φ = 30002280.

The previous prime is 90006817. The next prime is 90006863. The reversal of 90006858 is 85860009.

It can be written as a sum of positive squares in only one way, i.e., 58568409 + 31438449 = 7653^2 + 5607^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2500173 + ... + 2500208.

Almost surely, 2^90006858 is an apocalyptic number.

90006858 is an abundant number, since it is smaller than the sum of its proper divisors (105008040).

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

90006858 is a wasteful number, since it uses less digits than its factorization.

90006858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000389 (or 5000386 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 90006858 is about 9487.1944219564. The cubic root of 90006858 is about 448.1518571347.

The spelling of 90006858 in words is "ninety million, six thousand, eight hundred fifty-eight".