96810821 has 2 divisors, whose sum is σ = 96810822. Its totient is φ = 96810820.

The previous prime is 96810811. The next prime is 96810851. The reversal of 96810821 is 12801869.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96805921 + 4900 = 9839^2 + 70^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-96810821 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (96810811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48405410 + 48405411.

It is an arithmetic number, because the mean of its divisors is an integer number (48405411).

Almost surely, 2^96810821 is an apocalyptic number.

It is an amenable number.

96810821 is a deficient number, since it is larger than the sum of its proper divisors (1).

96810821 is an equidigital number, since it uses as much as digits as its factorization.

96810821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 96810821 is about 9839.2490058947. The cubic root of 96810821 is about 459.1711934773.

The spelling of 96810821 in words is "ninety-six million, eight hundred ten thousand, eight hundred twenty-one".