96721997 has 2 divisors, whose sum is σ = 96721998. Its totient is φ = 96721996.

The previous prime is 96721987. The next prime is 96722039. The reversal of 96721997 is 79912769.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81830116 + 14891881 = 9046^2 + 3859^2 .

It is a cyclic number.

It is not a de Polignac number, because 96721997 - 2⁴ = 96721981 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 (96721957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48360998 + 48360999.

It is an arithmetic number, because the mean of its divisors is an integer number (48360999).

Almost surely, 2^96721997 is an apocalyptic number.

It is an amenable number.

96721997 is a deficient number, since it is larger than the sum of its proper divisors (1).

96721997 is an equidigital number, since it uses as much as digits as its factorization.

96721997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 50.

The square root of 96721997 is about 9834.7342109485. The cubic root of 96721997 is about 459.0307205371.

The spelling of 96721997 in words is "ninety-six million, seven hundred twenty-one thousand, nine hundred ninety-seven".