477316721 has 8 divisors (see below), whose sum is σ = 546084864. Its totient is φ = 408693600.

The previous prime is 477316717. The next prime is 477316747. The reversal of 477316721 is 127613774.

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

It is not a de Polignac number, because 477316721 - 2² = 477316717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (477316751) 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, 29105 + ... + 42446.

It is an arithmetic number, because the mean of its divisors is an integer number (68260608).

Almost surely, 2^477316721 is an apocalyptic number.

It is an amenable number.

477316721 is a deficient number, since it is larger than the sum of its proper divisors (68768143).

477316721 is an equidigital number, since it uses as much as digits as its factorization.

477316721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72511.

The product of its digits is 49392, while the sum is 38.

The square root of 477316721 is about 21847.5792938257. The cubic root of 477316721 is about 781.5118174771.

The spelling of 477316721 in words is "four hundred seventy-seven million, three hundred sixteen thousand, seven hundred twenty-one".