90578223 has 24 divisors (see below), whose sum is σ = 139011600. Its totient is φ = 58288608.

The previous prime is 90578197. The next prime is 90578231. The reversal of 90578223 is 32287509.

It is a happy number.

It is not a de Polignac number, because 90578223 - 2¹⁶ = 90512687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90578273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20713 + ... + 24701.

It is an arithmetic number, because the mean of its divisors is an integer number (5792150).

Almost surely, 2^90578223 is an apocalyptic number.

90578223 is a deficient number, since it is larger than the sum of its proper divisors (48433377).

90578223 is a wasteful number, since it uses less digits than its factorization.

90578223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4056 (or 4021 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 90578223 is about 9517.2592168124. The cubic root of 90578223 is about 449.0981493528.

The spelling of 90578223 in words is "ninety million, five hundred seventy-eight thousand, two hundred twenty-three".