90643163 has 8 divisors (see below), whose sum is σ = 100765056. Its totient is φ = 80971200.

The previous prime is 90643153. The next prime is 90643181. The reversal of 90643163 is 36134609.

It is a happy number.

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 90643163 - 2²⁰ = 89594587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90643123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112058 + ... + 112863.

It is an arithmetic number, because the mean of its divisors is an integer number (12595632).

Almost surely, 2^90643163 is an apocalyptic number.

90643163 is a deficient number, since it is larger than the sum of its proper divisors (10121893).

90643163 is a wasteful number, since it uses less digits than its factorization.

90643163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224965.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 90643163 is about 9520.6703020323. The cubic root of 90643163 is about 449.2054505922.

The spelling of 90643163 in words is "ninety million, six hundred forty-three thousand, one hundred sixty-three".