6490881 has 16 divisors (see below), whose sum is σ = 9659520. Its totient is φ = 4307760.

The previous prime is 6490879. The next prime is 6490903. The reversal of 6490881 is 1880946.

It is a happy number.

6490881 is a `hidden beast` number, since 649 + 0 + 8 + 8 + 1 = 666.

It is not a de Polignac number, because 6490881 - 2¹ = 6490879 is a prime.

It is a super-2 number, since 2×6490881² = 84263072312322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6490801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8011 + ... + 8783.

It is an arithmetic number, because the mean of its divisors is an integer number (603720).

Almost surely, 2^6490881 is an apocalyptic number.

It is an amenable number.

6490881 is a deficient number, since it is larger than the sum of its proper divisors (3168639).

6490881 is a wasteful number, since it uses less digits than its factorization.

6490881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093 (or 1087 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 6490881 is about 2547.7207460787. The cubic root of 6490881 is about 186.5382432289.

The spelling of 6490881 in words is "six million, four hundred ninety thousand, eight hundred eighty-one".