6691317603 has 4 divisors (see below), whose sum is σ = 8921756808. Its totient is φ = 4460878400.

The previous prime is 6691317601. The next prime is 6691317613. The reversal of 6691317603 is 3067131966.

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 6691317603 - 2¹ = 6691317601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6691317601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1115219598 + ... + 1115219603.

It is an arithmetic number, because the mean of its divisors is an integer number (2230439202).

Almost surely, 2^6691317603 is an apocalyptic number.

6691317603 is a deficient number, since it is larger than the sum of its proper divisors (2230439205).

6691317603 is a wasteful number, since it uses less digits than its factorization.

6691317603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230439204.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 6691317603 is about 81800.4743445904. The cubic root of 6691317603 is about 1884.3889463541.

The spelling of 6691317603 in words is "six billion, six hundred ninety-one million, three hundred seventeen thousand, six hundred three".