90650663 has 2 divisors, whose sum is σ = 90650664. Its totient is φ = 90650662.

The previous prime is 90650621. The next prime is 90650687. The reversal of 90650663 is 36605609.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90650663 is a prime.

It is a Sophie Germain prime.

It is equal to p_5252588 and since 90650663 and 5252588 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90670663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45325331 + 45325332.

It is an arithmetic number, because the mean of its divisors is an integer number (45325332).

Almost surely, 2^90650663 is an apocalyptic number.

90650663 is a deficient number, since it is larger than the sum of its proper divisors (1).

90650663 is an equidigital number, since it uses as much as digits as its factorization.

90650663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 90650663 is about 9521.0641737150. The cubic root of 90650663 is about 449.2178396420.

The spelling of 90650663 in words is "ninety million, six hundred fifty thousand, six hundred sixty-three".