670606565 has 8 divisors (see below), whose sum is σ = 852064920. Its totient is φ = 504927232.

The previous prime is 670606549. The next prime is 670606583. The reversal of 670606565 is 565606076.

It can be written as a sum of positive squares in 4 ways, for example, as 295874401 + 374732164 = 17201^2 + 19358^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 670606565 - 2⁴ = 670606549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3944660 + ... + 3944829.

It is an arithmetic number, because the mean of its divisors is an integer number (106508115).

Almost surely, 2^670606565 is an apocalyptic number.

It is an amenable number.

670606565 is a deficient number, since it is larger than the sum of its proper divisors (181458355).

670606565 is a wasteful number, since it uses less digits than its factorization.

670606565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7889511.

The product of its (nonzero) digits is 226800, while the sum is 41.

The square root of 670606565 is about 25896.0723855955. The cubic root of 670606565 is about 875.2979948282.

The spelling of 670606565 in words is "six hundred seventy million, six hundred six thousand, five hundred sixty-five".