46721 has 4 divisors (see below), whose sum is σ = 49200. Its totient is φ = 44244.

The previous prime is 46703. The next prime is 46723. The reversal of 46721 is 12764.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 46721 - 2¹⁰ = 45697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 46693 and 46702.

It is not an unprimeable number, because it can be changed into a prime (46723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1211 + ... + 1248.

It is an arithmetic number, because the mean of its divisors is an integer number (12300).

2⁴⁶⁷²¹ is an apocalyptic number.

It is an amenable number.

46721 is a deficient number, since it is larger than the sum of its proper divisors (2479).

46721 is a wasteful number, since it uses less digits than its factorization.

46721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2478.

The product of its digits is 336, while the sum is 20.

The square root of 46721 is about 216.1504105941. The cubic root of 46721 is about 36.0167103492.

It can be divided in two parts, 46 and 721, that added together give a palindrome (767).

The spelling of 46721 in words is "forty-six thousand, seven hundred twenty-one".