90681803 has 2 divisors, whose sum is σ = 90681804. Its totient is φ = 90681802.

The previous prime is 90681779. The next prime is 90681827. The reversal of 90681803 is 30818609.

It is a balanced prime because it is at equal distance from previous prime (90681779) and next prime (90681827).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90681803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90681853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45340901 + 45340902.

It is an arithmetic number, because the mean of its divisors is an integer number (45340902).

Almost surely, 2^90681803 is an apocalyptic number.

90681803 is a deficient number, since it is larger than the sum of its proper divisors (1).

90681803 is an equidigital number, since it uses as much as digits as its factorization.

90681803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 90681803 is about 9522.6993546998. The cubic root of 90681803 is about 449.2692716690.

The spelling of 90681803 in words is "ninety million, six hundred eighty-one thousand, eight hundred three".