675205665 has 8 divisors (see below), whose sum is σ = 1080329088. Its totient is φ = 360109680.

The previous prime is 675205649. The next prime is 675205667. The reversal of 675205665 is 566502576.

It is a happy number.

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

It is not a de Polignac number, because 675205665 - 2⁴ = 675205649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (675205667) 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 7 ways as a sum of consecutive naturals, for example, 22506841 + ... + 22506870.

It is an arithmetic number, because the mean of its divisors is an integer number (135041136).

Almost surely, 2^675205665 is an apocalyptic number.

It is an amenable number.

675205665 is a deficient number, since it is larger than the sum of its proper divisors (405123423).

675205665 is a wasteful number, since it uses less digits than its factorization.

675205665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45013719.

The product of its (nonzero) digits is 378000, while the sum is 42.

The square root of 675205665 is about 25984.7198368580. The cubic root of 675205665 is about 877.2944039886.

The spelling of 675205665 in words is "six hundred seventy-five million, two hundred five thousand, six hundred sixty-five".