6695423491 has 4 divisors (see below), whose sum is σ = 6695703000. Its totient is φ = 6695143984.

The previous prime is 6695423473. The next prime is 6695423519. The reversal of 6695423491 is 1943245966.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6695423491 - 2¹⁷ = 6695292419 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6695423461) 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 in 3 ways as a sum of consecutive naturals, for example, 100066 + ... + 152983.

It is an arithmetic number, because the mean of its divisors is an integer number (1673925750).

Almost surely, 2^6695423491 is an apocalyptic number.

6695423491 is a deficient number, since it is larger than the sum of its proper divisors (279509).

6695423491 is a wasteful number, since it uses less digits than its factorization.

6695423491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279508.

The product of its digits is 1399680, while the sum is 49.

The square root of 6695423491 is about 81825.5674651878. The cubic root of 6695423491 is about 1884.7742968651.

The spelling of 6695423491 in words is "six billion, six hundred ninety-five million, four hundred twenty-three thousand, four hundred ninety-one".