6491481 has 4 divisors (see below), whose sum is σ = 8655312. Its totient is φ = 4327652.

The previous prime is 6491477. The next prime is 6491533. The reversal of 6491481 is 1841946.

6491481 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6491481 - 2² = 6491477 is a prime.

It is a super-2 number, since 2×6491481² = 84278651146722, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (6491411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1081911 + ... + 1081916.

It is an arithmetic number, because the mean of its divisors is an integer number (2163828).

Almost surely, 2^6491481 is an apocalyptic number.

It is an amenable number.

6491481 is a deficient number, since it is larger than the sum of its proper divisors (2163831).

6491481 is a wasteful number, since it uses less digits than its factorization.

6491481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163830.

The product of its digits is 6912, while the sum is 33.

The square root of 6491481 is about 2547.8384956665. The cubic root of 6491481 is about 186.5439907537.

It can be divided in two parts, 649 and 1481, that multiplied together give a palindrome (961169).

The spelling of 6491481 in words is "six million, four hundred ninety-one thousand, four hundred eighty-one".