90663223 has 4 divisors (see below), whose sum is σ = 103615120. Its totient is φ = 77711328.

The previous prime is 90663203. The next prime is 90663229. The reversal of 90663223 is 32236609.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32236609 = 61 ⋅528469.

It is a cyclic number.

It is not a de Polignac number, because 90663223 - 2¹³ = 90655031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90663229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6475938 + ... + 6475951.

It is an arithmetic number, because the mean of its divisors is an integer number (25903780).

Almost surely, 2^90663223 is an apocalyptic number.

90663223 is a deficient number, since it is larger than the sum of its proper divisors (12951897).

90663223 is a wasteful number, since it uses less digits than its factorization.

90663223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12951896.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 90663223 is about 9521.7237410040. The cubic root of 90663223 is about 449.2385856403.

The spelling of 90663223 in words is "ninety million, six hundred sixty-three thousand, two hundred twenty-three".