966064721 has 2 divisors, whose sum is σ = 966064722. Its totient is φ = 966064720.

The previous prime is 966064663. The next prime is 966064727. The reversal of 966064721 is 127460669.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 650505025 + 315559696 = 25505^2 + 17764^2 .

It is a cyclic number.

It is not a de Polignac number, because 966064721 - 2¹⁰ = 966063697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (966064727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483032360 + 483032361.

It is an arithmetic number, because the mean of its divisors is an integer number (483032361).

Almost surely, 2^966064721 is an apocalyptic number.

It is an amenable number.

966064721 is a deficient number, since it is larger than the sum of its proper divisors (1).

966064721 is an equidigital number, since it uses as much as digits as its factorization.

966064721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 966064721 is about 31081.5817004219. The cubic root of 966064721 is about 988.5578161117.

The spelling of 966064721 in words is "nine hundred sixty-six million, sixty-four thousand, seven hundred twenty-one".