90497168 has 80 divisors (see below), whose sum is σ = 191237760. Its totient is φ = 41395200.

The previous prime is 90497161. The next prime is 90497189. The reversal of 90497168 is 86179409.

It is a Cunningham number, because it is equal to 9513²-1.

It is not an unprimeable number, because it can be changed into a prime (90497161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1274573 + ... + 1274643.

It is an arithmetic number, because the mean of its divisors is an integer number (2390472).

Almost surely, 2^90497168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90497168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95618880).

90497168 is an abundant number, since it is smaller than the sum of its proper divisors (100740592).

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

90497168 is a wasteful number, since it uses less digits than its factorization.

90497168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 90497168 is about 9512.9999474403. Note that the first 4 decimals coincide. The cubic root of 90497168 is about 448.9641491011.

The spelling of 90497168 in words is "ninety million, four hundred ninety-seven thousand, one hundred sixty-eight".