67475611657 has 2 divisors, whose sum is σ = 67475611658. Its totient is φ = 67475611656.

The previous prime is 67475611633. The next prime is 67475611669. The reversal of 67475611657 is 75611657476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42078727161 + 25396884496 = 205131^2 + 159364^2 .

It is a cyclic number.

It is not a de Polignac number, because 67475611657 - 2¹⁵ = 67475578889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67475611598 and 67475611607.

It is not a weakly prime, because it can be changed into another prime (67475615657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33737805828 + 33737805829.

It is an arithmetic number, because the mean of its divisors is an integer number (33737805829).

Almost surely, 2^67475611657 is an apocalyptic number.

It is an amenable number.

67475611657 is a deficient number, since it is larger than the sum of its proper divisors (1).

67475611657 is an equidigital number, since it uses as much as digits as its factorization.

67475611657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7408800, while the sum is 55.

The spelling of 67475611657 in words is "sixty-seven billion, four hundred seventy-five million, six hundred eleven thousand, six hundred fifty-seven".