6475061821 has 8 divisors (see below), whose sum is σ = 6849144000. Its totient is φ = 6108692832.

The previous prime is 6475061717. The next prime is 6475061837. The reversal of 6475061821 is 1281605746.

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 6475061821 - 2²⁵ = 6441507389 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 (6475061891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1926571 + ... + 1929928.

It is an arithmetic number, because the mean of its divisors is an integer number (856143000).

Almost surely, 2^6475061821 is an apocalyptic number.

It is an amenable number.

6475061821 is a deficient number, since it is larger than the sum of its proper divisors (374082179).

6475061821 is a wasteful number, since it uses less digits than its factorization.

6475061821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3856595.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 6475061821 is about 80467.7688332415. The cubic root of 6475061821 is about 1863.8658008043.

The spelling of 6475061821 in words is "six billion, four hundred seventy-five million, sixty-one thousand, eight hundred twenty-one".