6491603 has 4 divisors (see below), whose sum is σ = 6873480. Its totient is φ = 6109728.

The previous prime is 6491561. The next prime is 6491623. The reversal of 6491603 is 3061946.

6491603 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6491603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6491623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190913 + ... + 190946.

It is an arithmetic number, because the mean of its divisors is an integer number (1718370).

Almost surely, 2^6491603 is an apocalyptic number.

6491603 is a deficient number, since it is larger than the sum of its proper divisors (381877).

6491603 is a wasteful number, since it uses less digits than its factorization.

6491603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381876.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 6491603 is about 2547.8624374169. The cubic root of 6491603 is about 186.5451593737.

The spelling of 6491603 in words is "six million, four hundred ninety-one thousand, six hundred three".