90668503 has 2 divisors, whose sum is σ = 90668504. Its totient is φ = 90668502.

The previous prime is 90668477. The next prime is 90668527. The reversal of 90668503 is 30586609.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90668503 is a prime.

It is a super-2 number, since 2×90668503² = 16441554872522018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90668533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45334251 + 45334252.

It is an arithmetic number, because the mean of its divisors is an integer number (45334252).

Almost surely, 2^90668503 is an apocalyptic number.

90668503 is a deficient number, since it is larger than the sum of its proper divisors (1).

90668503 is an equidigital number, since it uses as much as digits as its factorization.

90668503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 90668503 is about 9522.0009976895. Note that the first 3 decimals coincide. The cubic root of 90668503 is about 449.2473063159.

The spelling of 90668503 in words is "ninety million, six hundred sixty-eight thousand, five hundred three".