675391 has 2 divisors, whose sum is σ = 675392. Its totient is φ = 675390.

The previous prime is 675347. The next prime is 675407. The reversal of 675391 is 193576.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 675391 - 2⁷ = 675263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (675341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337695 + 337696.

It is an arithmetic number, because the mean of its divisors is an integer number (337696).

2⁶⁷⁵³⁹¹ is an apocalyptic number.

675391 is a deficient number, since it is larger than the sum of its proper divisors (1).

675391 is an equidigital number, since it uses as much as digits as its factorization.

675391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 31.

The square root of 675391 is about 821.8217568305. The cubic root of 675391 is about 87.7374665205.

The spelling of 675391 in words is "six hundred seventy-five thousand, three hundred ninety-one".