675451813 has 2 divisors, whose sum is σ = 675451814. Its totient is φ = 675451812.

The previous prime is 675451807. The next prime is 675451823. The reversal of 675451813 is 318154576.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 374151649 + 301300164 = 19343^2 + 17358^2 .

It is a cyclic number.

It is not a de Polignac number, because 675451813 - 2⁵ = 675451781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (675451823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337725906 + 337725907.

It is an arithmetic number, because the mean of its divisors is an integer number (337725907).

Almost surely, 2^675451813 is an apocalyptic number.

It is an amenable number.

675451813 is a deficient number, since it is larger than the sum of its proper divisors (1).

675451813 is an equidigital number, since it uses as much as digits as its factorization.

675451813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 40.

The square root of 675451813 is about 25989.4558042295. The cubic root of 675451813 is about 877.4009976969.

The spelling of 675451813 in words is "six hundred seventy-five million, four hundred fifty-one thousand, eight hundred thirteen".