985535651 has 2 divisors, whose sum is σ = 985535652. Its totient is φ = 985535650.

The previous prime is 985535641. The next prime is 985535657. The reversal of 985535651 is 156535589.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 985535651 - 2¹⁸ = 985273507 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 985535596 and 985535605.

It is not a weakly prime, because it can be changed into another prime (985535657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492767825 + 492767826.

It is an arithmetic number, because the mean of its divisors is an integer number (492767826).

Almost surely, 2^985535651 is an apocalyptic number.

985535651 is a deficient number, since it is larger than the sum of its proper divisors (1).

985535651 is an equidigital number, since it uses as much as digits as its factorization.

985535651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810000, while the sum is 47.

The square root of 985535651 is about 31393.2421231067. The cubic root of 985535651 is about 995.1551153337.

The spelling of 985535651 in words is "nine hundred eighty-five million, five hundred thirty-five thousand, six hundred fifty-one".