675123401 has 2 divisors, whose sum is σ = 675123402. Its totient is φ = 675123400.

The previous prime is 675123389. The next prime is 675123403. The reversal of 675123401 is 104321576.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 636048400 + 39075001 = 25220^2 + 6251^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-675123401 is a prime.

Together with 675123403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (675123403) 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 as a sum of consecutive naturals, namely, 337561700 + 337561701.

It is an arithmetic number, because the mean of its divisors is an integer number (337561701).

Almost surely, 2^675123401 is an apocalyptic number.

It is an amenable number.

675123401 is a deficient number, since it is larger than the sum of its proper divisors (1).

675123401 is an equidigital number, since it uses as much as digits as its factorization.

675123401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 675123401 is about 25983.1368583549. The cubic root of 675123401 is about 877.2587740160.

Adding to 675123401 its reverse (104321576), we get a palindrome (779444977).

The spelling of 675123401 in words is "six hundred seventy-five million, one hundred twenty-three thousand, four hundred one".