6509481 has 8 divisors (see below), whose sum is σ = 9468384. Its totient is φ = 3945120.

The previous prime is 6509449. The next prime is 6509491. The reversal of 6509481 is 1849056.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6509481 - 2⁵ = 6509449 is a prime.

It is a super-2 number, since 2×6509481² = 84746685778722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 197257 = 6509481 / (6 + 5 + 0 + 9 + 4 + 8 + 1).

It is not an unprimeable number, because it can be changed into a prime (6509491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98596 + ... + 98661.

It is an arithmetic number, because the mean of its divisors is an integer number (1183548).

Almost surely, 2^6509481 is an apocalyptic number.

It is an amenable number.

6509481 is a deficient number, since it is larger than the sum of its proper divisors (2958903).

6509481 is a wasteful number, since it uses less digits than its factorization.

6509481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197271.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 6509481 is about 2551.3684563387. The cubic root of 6509481 is about 186.7162520624.

The spelling of 6509481 in words is "six million, five hundred nine thousand, four hundred eighty-one".