606535861 has 2 divisors, whose sum is σ = 606535862. Its totient is φ = 606535860.

The previous prime is 606535849. The next prime is 606535883. The reversal of 606535861 is 168535606.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 492174225 + 114361636 = 22185^2 + 10694^2 .

It is a cyclic number.

It is not a de Polignac number, because 606535861 - 2⁷ = 606535733 is a prime.

It is a super-2 number, since 2×606535861² = 735771501358022642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (606535361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303267930 + 303267931.

It is an arithmetic number, because the mean of its divisors is an integer number (303267931).

Almost surely, 2^606535861 is an apocalyptic number.

It is an amenable number.

606535861 is a deficient number, since it is larger than the sum of its proper divisors (1).

606535861 is an equidigital number, since it uses as much as digits as its factorization.

606535861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 606535861 is about 24627.9487777606. The cubic root of 606535861 is about 846.4841445441.

The spelling of 606535861 in words is "six hundred six million, five hundred thirty-five thousand, eight hundred sixty-one".