985010569 has 2 divisors, whose sum is σ = 985010570. Its totient is φ = 985010568.

The previous prime is 985010563. The next prime is 985010659. The reversal of 985010569 is 965010589.

It is a happy number.

Together with next prime (985010659) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 927811600 + 57198969 = 30460^2 + 7563^2 .

It is a cyclic number.

It is not a de Polignac number, because 985010569 - 2²¹ = 982913417 is a prime.

It is a super-2 number, since 2×985010569² = 1940491642083407522, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (985010563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492505284 + 492505285.

It is an arithmetic number, because the mean of its divisors is an integer number (492505285).

Almost surely, 2^985010569 is an apocalyptic number.

It is an amenable number.

985010569 is a deficient number, since it is larger than the sum of its proper divisors (1).

985010569 is an equidigital number, since it uses as much as digits as its factorization.

985010569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 985010569 is about 31384.8780306695. The cubic root of 985010569 is about 994.9783482237.

The spelling of 985010569 in words is "nine hundred eighty-five million, ten thousand, five hundred sixty-nine".