6691485403 has 4 divisors (see below), whose sum is σ = 6721492288. Its totient is φ = 6661478520.

The previous prime is 6691485397. The next prime is 6691485421. The reversal of 6691485403 is 3045841966.

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 6691485403 - 2²⁹ = 6154614491 is a prime.

It is the 81802-nd Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6691485103) by changing a digit.

It is a nontrivial repunit in base 81801.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15003108 + ... + 15003553.

It is an arithmetic number, because the mean of its divisors is an integer number (1680373072).

Almost surely, 2^6691485403 is an apocalyptic number.

6691485403 is a deficient number, since it is larger than the sum of its proper divisors (30006885).

6691485403 is a wasteful number, since it uses less digits than its factorization.

6691485403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30006884.

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 6691485403 is about 81801.5000045843. The cubic root of 6691485403 is about 1884.4046980013.

The spelling of 6691485403 in words is "six billion, six hundred ninety-one million, four hundred eighty-five thousand, four hundred three".