8645437061 has 2 divisors, whose sum is σ = 8645437062. Its totient is φ = 8645437060.

The previous prime is 8645437037. The next prime is 8645437117. The reversal of 8645437061 is 1607345468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8349390625 + 296046436 = 91375^2 + 17206^2 .

It is a cyclic number.

It is not a de Polignac number, because 8645437061 - 2³⁰ = 7571695237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8645437861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4322718530 + 4322718531.

It is an arithmetic number, because the mean of its divisors is an integer number (4322718531).

Almost surely, 2^8645437061 is an apocalyptic number.

It is an amenable number.

8645437061 is a deficient number, since it is larger than the sum of its proper divisors (1).

8645437061 is an equidigital number, since it uses as much as digits as its factorization.

8645437061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 8645437061 is about 92980.8424407953. The cubic root of 8645437061 is about 2052.4014736969.

The spelling of 8645437061 in words is "eight billion, six hundred forty-five million, four hundred thirty-seven thousand, sixty-one".