90287065 has 8 divisors (see below), whose sum is σ = 118194048. Its totient is φ = 65663280.

The previous prime is 90287053. The next prime is 90287077. The reversal of 90287065 is 56078209.

It is an interprime number because it is at equal distance from previous prime (90287053) and next prime (90287077).

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

It is not a de Polignac number, because 90287065 - 2¹³ = 90278873 is a prime.

It is a Duffinian number.

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, 820737 + ... + 820846.

It is an arithmetic number, because the mean of its divisors is an integer number (14774256).

Almost surely, 2^90287065 is an apocalyptic number.

It is an amenable number.

90287065 is a deficient number, since it is larger than the sum of its proper divisors (27906983).

90287065 is a wasteful number, since it uses less digits than its factorization.

90287065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641599.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 90287065 is about 9501.9505892211. The cubic root of 90287065 is about 448.6164335850.

Subtracting from 90287065 its reverse (56078209), we obtain a triangular number (34208856 = T₈₂₇₁).

The spelling of 90287065 in words is "ninety million, two hundred eighty-seven thousand, sixty-five".