605665057 has 4 divisors (see below), whose sum is σ = 608708800. Its totient is φ = 602621316.

The previous prime is 605665051. The next prime is 605665061. The reversal of 605665057 is 750566506.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 605665057 - 2⁷ = 605664929 is a prime.

It is a super-2 number, since 2×605665057² = 733660322541626498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (605665051) 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, 1521573 + ... + 1521970.

It is an arithmetic number, because the mean of its divisors is an integer number (152177200).

Almost surely, 2^605665057 is an apocalyptic number.

It is an amenable number.

605665057 is a deficient number, since it is larger than the sum of its proper divisors (3043743).

605665057 is a wasteful number, since it uses less digits than its factorization.

605665057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3043742.

The product of its (nonzero) digits is 189000, while the sum is 40.

The square root of 605665057 is about 24610.2632452398. The cubic root of 605665057 is about 846.0788512108.

The spelling of 605665057 in words is "six hundred five million, six hundred sixty-five thousand, fifty-seven".