6473480821 has 4 divisors (see below), whose sum is σ = 6474242412. Its totient is φ = 6472719232.

The previous prime is 6473480807. The next prime is 6473480843. The reversal of 6473480821 is 1280843746.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3099148900 + 3374331921 = 55670^2 + 58089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6473480821 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 (6473480921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367900 + ... + 385093.

It is an arithmetic number, because the mean of its divisors is an integer number (1618560603).

Almost surely, 2^6473480821 is an apocalyptic number.

It is an amenable number.

6473480821 is a deficient number, since it is larger than the sum of its proper divisors (761591).

6473480821 is an equidigital number, since it uses as much as digits as its factorization.

6473480821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761590.

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 6473480821 is about 80457.9444244010. The cubic root of 6473480821 is about 1863.7140899388.

The spelling of 6473480821 in words is "six billion, four hundred seventy-three million, four hundred eighty thousand, eight hundred twenty-one".