90644803 has 2 divisors, whose sum is σ = 90644804. Its totient is φ = 90644802.

The previous prime is 90644797. The next prime is 90644831. The reversal of 90644803 is 30844609.

It is a weak prime.

It is an emirp because it is prime and its reverse (30844609) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90644803 - 2²¹ = 88547651 is a prime.

It is not a weakly prime, because it can be changed into another prime (90644843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45322401 + 45322402.

It is an arithmetic number, because the mean of its divisors is an integer number (45322402).

Almost surely, 2^90644803 is an apocalyptic number.

90644803 is a deficient number, since it is larger than the sum of its proper divisors (1).

90644803 is an equidigital number, since it uses as much as digits as its factorization.

90644803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 90644803 is about 9520.7564300322. The cubic root of 90644803 is about 449.2081597228.

The spelling of 90644803 in words is "ninety million, six hundred forty-four thousand, eight hundred three".