481221647 has 4 divisors (see below), whose sum is σ = 481399200. Its totient is φ = 481044096.

The previous prime is 481221583. The next prime is 481221659. The reversal of 481221647 is 746122184.

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

It is a cyclic number.

It is not a de Polignac number, because 481221647 - 2⁶ = 481221583 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 (481221347) 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 3 ways as a sum of consecutive naturals, for example, 84647 + ... + 90152.

It is an arithmetic number, because the mean of its divisors is an integer number (120349800).

Almost surely, 2^481221647 is an apocalyptic number.

481221647 is a deficient number, since it is larger than the sum of its proper divisors (177553).

481221647 is a wasteful number, since it uses less digits than its factorization.

481221647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177552.

The product of its digits is 21504, while the sum is 35.

The square root of 481221647 is about 21936.7647341170. The cubic root of 481221647 is about 783.6372136022.

The spelling of 481221647 in words is "four hundred eighty-one million, two hundred twenty-one thousand, six hundred forty-seven".