6693475457 has 2 divisors, whose sum is σ = 6693475458. Its totient is φ = 6693475456.

The previous prime is 6693475427. The next prime is 6693475469. The reversal of 6693475457 is 7545743966.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6663620161 + 29855296 = 81631^2 + 5464^2 .

It is a cyclic number.

It is not a de Polignac number, because 6693475457 - 2²⁴ = 6676698241 is a prime.

It is a super-2 number, since 2×6693475457² = 89605227386922717698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6693475427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3346737728 + 3346737729.

It is an arithmetic number, because the mean of its divisors is an integer number (3346737729).

Almost surely, 2^6693475457 is an apocalyptic number.

It is an amenable number.

6693475457 is a deficient number, since it is larger than the sum of its proper divisors (1).

6693475457 is an equidigital number, since it uses as much as digits as its factorization.

6693475457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19051200, while the sum is 56.

The square root of 6693475457 is about 81813.6630215272. The cubic root of 6693475457 is about 1884.5914873903.

The spelling of 6693475457 in words is "six billion, six hundred ninety-three million, four hundred seventy-five thousand, four hundred fifty-seven".