6477241021 has 8 divisors (see below), whose sum is σ = 6607994040. Its totient is φ = 6347776512.

The previous prime is 6477241007. The next prime is 6477241039. The reversal of 6477241021 is 1201427746.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 433888900 + 6043352121 = 20830^2 + 77739^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6477241021 - 2⁵ = 6477240989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6477241051) 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, 311970 + ... + 332083.

It is an arithmetic number, because the mean of its divisors is an integer number (825999255).

Almost surely, 2^6477241021 is an apocalyptic number.

It is an amenable number.

6477241021 is a deficient number, since it is larger than the sum of its proper divisors (130753019).

6477241021 is a wasteful number, since it uses less digits than its factorization.

6477241021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644255.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 6477241021 is about 80481.3085194320. The cubic root of 6477241021 is about 1864.0748737515.

Adding to 6477241021 its reverse (1201427746), we get a palindrome (7678668767).

The spelling of 6477241021 in words is "six billion, four hundred seventy-seven million, two hundred forty-one thousand, twenty-one".