9564464681 has 2 divisors, whose sum is σ = 9564464682. Its totient is φ = 9564464680.

The previous prime is 9564464671. The next prime is 9564464729. The reversal of 9564464681 is 1864644659.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9528883456 + 35581225 = 97616^2 + 5965^2 .

It is a cyclic number.

It is not a de Polignac number, because 9564464681 - 2⁶ = 9564464617 is a prime.

It is a super-3 number, since 3×9564464681³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (9564464671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4782232340 + 4782232341.

It is an arithmetic number, because the mean of its divisors is an integer number (4782232341).

Almost surely, 2^9564464681 is an apocalyptic number.

It is an amenable number.

9564464681 is a deficient number, since it is larger than the sum of its proper divisors (1).

9564464681 is an equidigital number, since it uses as much as digits as its factorization.

9564464681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 53.

The square root of 9564464681 is about 97798.0811723829. The cubic root of 9564464681 is about 2122.6915411147.

The spelling of 9564464681 in words is "nine billion, five hundred sixty-four million, four hundred sixty-four thousand, six hundred eighty-one".