6477021 has 12 divisors (see below), whose sum is σ = 9392448. Its totient is φ = 4301064.

The previous prime is 6477019. The next prime is 6477049. The reversal of 6477021 is 1207746.

It is not a de Polignac number, because 6477021 - 2¹ = 6477019 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6477011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1276 + ... + 3818.

It is an arithmetic number, because the mean of its divisors is an integer number (782704).

Almost surely, 2^6477021 is an apocalyptic number.

It is an amenable number.

6477021 is a deficient number, since it is larger than the sum of its proper divisors (2915427).

6477021 is a wasteful number, since it uses less digits than its factorization.

6477021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832 (or 2829 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 6477021 is about 2544.9992141453. Note that the first 3 decimals coincide. The cubic root of 6477021 is about 186.4053767015.

The spelling of 6477021 in words is "six million, four hundred seventy-seven thousand, twenty-one".