90000865 has 8 divisors (see below), whose sum is σ = 108069120. Its totient is φ = 71955312.

The previous prime is 90000857. The next prime is 90000877. The reversal of 90000865 is 56800009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90000865 - 2³ = 90000857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4816 + ... + 14254.

It is an arithmetic number, because the mean of its divisors is an integer number (13508640).

Almost surely, 2^90000865 is an apocalyptic number.

It is an amenable number.

90000865 is a deficient number, since it is larger than the sum of its proper divisors (18068255).

90000865 is a wasteful number, since it uses less digits than its factorization.

90000865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11351.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 90000865 is about 9486.8785698985. The cubic root of 90000865 is about 448.1419103604.

The spelling of 90000865 in words is "ninety million, eight hundred sixty-five", and thus it is an aban number.