606497561 has 4 divisors (see below), whose sum is σ = 627411300. Its totient is φ = 585583824.

The previous prime is 606497539. The next prime is 606497587. The reversal of 606497561 is 165794606.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99121936 + 507375625 = 9956^2 + 22525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-606497561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (606497261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10456826 + ... + 10456883.

It is an arithmetic number, because the mean of its divisors is an integer number (156852825).

Almost surely, 2^606497561 is an apocalyptic number.

It is an amenable number.

606497561 is a deficient number, since it is larger than the sum of its proper divisors (20913739).

606497561 is a wasteful number, since it uses less digits than its factorization.

606497561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20913738.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 606497561 is about 24627.1711936227. The cubic root of 606497561 is about 846.4663269523.

The spelling of 606497561 in words is "six hundred six million, four hundred ninety-seven thousand, five hundred sixty-one".