90897 has 8 divisors (see below), whose sum is σ = 124320. Its totient is φ = 59040.

The previous prime is 90887. The next prime is 90901. The reversal of 90897 is 79809.

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

It is not a de Polignac number, because 90897 - 2⁶ = 90833 is a prime.

90897 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (90847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247 + ... + 492.

It is an arithmetic number, because the mean of its divisors is an integer number (15540).

2⁹⁰⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

90897 is a deficient number, since it is larger than the sum of its proper divisors (33423).

90897 is a wasteful number, since it uses less digits than its factorization.

90897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 90897 is about 301.4912934066. The cubic root of 90897 is about 44.9624377908.

The spelling of 90897 in words is "ninety thousand, eight hundred ninety-seven".