90619663 has 2 divisors, whose sum is σ = 90619664. Its totient is φ = 90619662.

The previous prime is 90619621. The next prime is 90619667. The reversal of 90619663 is 36691609.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90619663 - 2¹³ = 90611471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90619667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45309831 + 45309832.

It is an arithmetic number, because the mean of its divisors is an integer number (45309832).

Almost surely, 2^90619663 is an apocalyptic number.

90619663 is a deficient number, since it is larger than the sum of its proper divisors (1).

90619663 is an equidigital number, since it uses as much as digits as its factorization.

90619663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 90619663 is about 9519.4360652299. The cubic root of 90619663 is about 449.1666271438.

The spelling of 90619663 in words is "ninety million, six hundred nineteen thousand, six hundred sixty-three".