90695543 has 2 divisors, whose sum is σ = 90695544. Its totient is φ = 90695542.

The previous prime is 90695537. The next prime is 90695581. The reversal of 90695543 is 34559609.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90695543 - 2²⁶ = 23586679 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90695543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90695503) 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, 45347771 + 45347772.

It is an arithmetic number, because the mean of its divisors is an integer number (45347772).

Almost surely, 2^90695543 is an apocalyptic number.

90695543 is a deficient number, since it is larger than the sum of its proper divisors (1).

90695543 is an equidigital number, since it uses as much as digits as its factorization.

90695543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 90695543 is about 9523.4207614701. The cubic root of 90695543 is about 449.2919614401.

The spelling of 90695543 in words is "ninety million, six hundred ninety-five thousand, five hundred forty-three".