476721321 has 8 divisors (see below), whose sum is σ = 635729664. Its totient is φ = 317763600.

The previous prime is 476721319. The next prime is 476721353. The reversal of 476721321 is 123127674.

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

It is not a de Polignac number, because 476721321 - 2¹ = 476721319 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (476722321) 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 7 ways as a sum of consecutive naturals, for example, 27775 + ... + 41531.

It is an arithmetic number, because the mean of its divisors is an integer number (79466208).

Almost surely, 2^476721321 is an apocalyptic number.

It is an amenable number.

476721321 is a deficient number, since it is larger than the sum of its proper divisors (159008343).

476721321 is a wasteful number, since it uses less digits than its factorization.

476721321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25311.

The product of its digits is 14112, while the sum is 33.

The square root of 476721321 is about 21833.9488182967. The cubic root of 476721321 is about 781.1867323187.

Adding to 476721321 its reverse (123127674), we get a palindrome (599848995).

The spelling of 476721321 in words is "four hundred seventy-six million, seven hundred twenty-one thousand, three hundred twenty-one".