675946813 has 2 divisors, whose sum is σ = 675946814. Its totient is φ = 675946812.

The previous prime is 675946783. The next prime is 675946841. The reversal of 675946813 is 318649576.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 532594084 + 143352729 = 23078^2 + 11973^2 .

It is a cyclic number.

It is not a de Polignac number, because 675946813 - 2⁹ = 675946301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (675946883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337973406 + 337973407.

It is an arithmetic number, because the mean of its divisors is an integer number (337973407).

Almost surely, 2^675946813 is an apocalyptic number.

It is an amenable number.

675946813 is a deficient number, since it is larger than the sum of its proper divisors (1).

675946813 is an equidigital number, since it uses as much as digits as its factorization.

675946813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

The square root of 675946813 is about 25998.9771529574. The cubic root of 675946813 is about 877.6152776965.

The spelling of 675946813 in words is "six hundred seventy-five million, nine hundred forty-six thousand, eight hundred thirteen".