675185509 has 16 divisors (see below), whose sum is σ = 704487168. Its totient is φ = 646555392.

The previous prime is 675185507. The next prime is 675185519. The reversal of 675185509 is 905581576.

It is a cyclic number.

It is not a de Polignac number, because 675185509 - 2¹ = 675185507 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 (675185507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 697744 + ... + 698710.

It is an arithmetic number, because the mean of its divisors is an integer number (44030448).

Almost surely, 2^675185509 is an apocalyptic number.

It is an amenable number.

675185509 is a deficient number, since it is larger than the sum of its proper divisors (29301659).

675185509 is a wasteful number, since it uses less digits than its factorization.

675185509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284.

The product of its (nonzero) digits is 378000, while the sum is 46.

The square root of 675185509 is about 25984.3319906439. The cubic root of 675185509 is about 877.2856743412.

The spelling of 675185509 in words is "six hundred seventy-five million, one hundred eighty-five thousand, five hundred nine".