969721 has 2 divisors, whose sum is σ = 969722. Its totient is φ = 969720.

The previous prime is 969719. The next prime is 969743. The reversal of 969721 is 127969.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 837225 + 132496 = 915^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 969721 - 2¹ = 969719 is a prime.

Together with 969719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (969791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484860 + 484861.

It is an arithmetic number, because the mean of its divisors is an integer number (484861).

2⁹⁶⁹⁷²¹ is an apocalyptic number.

It is an amenable number.

969721 is a deficient number, since it is larger than the sum of its proper divisors (1).

969721 is an equidigital number, since it uses as much as digits as its factorization.

969721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 34.

The square root of 969721 is about 984.7441292031. The cubic root of 969721 is about 98.9803382373.

The spelling of 969721 in words is "nine hundred sixty-nine thousand, seven hundred twenty-one".