675851213 has 4 divisors (see below), whose sum is σ = 694117500. Its totient is φ = 657584928.

The previous prime is 675851191. The next prime is 675851233. The reversal of 675851213 is 312158576.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 480354889 + 195496324 = 21917^2 + 13982^2 .

It is a cyclic number.

It is not a de Polignac number, because 675851213 - 2⁶ = 675851149 is a prime.

It is a super-2 number, since 2×675851213² = 913549724227142738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675851233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9133088 + ... + 9133161.

It is an arithmetic number, because the mean of its divisors is an integer number (173529375).

Almost surely, 2^675851213 is an apocalyptic number.

It is an amenable number.

675851213 is a deficient number, since it is larger than the sum of its proper divisors (18266287).

675851213 is a wasteful number, since it uses less digits than its factorization.

675851213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18266286.

The product of its digits is 50400, while the sum is 38.

The square root of 675851213 is about 25997.1385540794. The cubic root of 675851213 is about 877.5739016717.

The spelling of 675851213 in words is "six hundred seventy-five million, eight hundred fifty-one thousand, two hundred thirteen".