605125661 has 16 divisors (see below), whose sum is σ = 730089600. Its totient is φ = 489950208.

The previous prime is 605125649. The next prime is 605125691. The reversal of 605125661 is 166521506.

It is a cyclic number.

It is not a de Polignac number, because 605125661 - 2⁶ = 605125597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605125621) 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 15 ways as a sum of consecutive naturals, for example, 40505 + ... + 53393.

It is an arithmetic number, because the mean of its divisors is an integer number (45630600).

Almost surely, 2^605125661 is an apocalyptic number.

It is an amenable number.

605125661 is a deficient number, since it is larger than the sum of its proper divisors (124963939).

605125661 is a wasteful number, since it uses less digits than its factorization.

605125661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13268.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 605125661 is about 24599.3020429442. The cubic root of 605125661 is about 845.8276083337.

The spelling of 605125661 in words is "six hundred five million, one hundred twenty-five thousand, six hundred sixty-one".