90668897 has 8 divisors (see below), whose sum is σ = 101212320. Its totient is φ = 80508960.

The previous prime is 90668887. The next prime is 90668927. The reversal of 90668897 is 79886609.

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 90668897 - 2¹⁰ = 90667873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90668807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95372 + ... + 96317.

It is an arithmetic number, because the mean of its divisors is an integer number (12651540).

Almost surely, 2^90668897 is an apocalyptic number.

It is an amenable number.

90668897 is a deficient number, since it is larger than the sum of its proper divisors (10543423).

90668897 is a wasteful number, since it uses less digits than its factorization.

90668897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191743.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 90668897 is about 9522.0216865958. The cubic root of 90668897 is about 449.2479570498.

The spelling of 90668897 in words is "ninety million, six hundred sixty-eight thousand, eight hundred ninety-seven".