336721 has 8 divisors (see below), whose sum is σ = 419904. Its totient is φ = 262320.

The previous prime is 336703. The next prime is 336727. The reversal of 336721 is 127633.

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 336721 - 2⁵ = 336689 is a prime.

It is a super-3 number, since 3×336721³ = 114533323267600083, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 336692 and 336701.

It is not an unprimeable number, because it can be changed into a prime (336727) 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, 2110 + ... + 2263.

It is an arithmetic number, because the mean of its divisors is an integer number (52488).

2³³⁶⁷²¹ is an apocalyptic number.

It is an amenable number.

336721 is a deficient number, since it is larger than the sum of its proper divisors (83183).

336721 is a wasteful number, since it uses less digits than its factorization.

336721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391.

The product of its digits is 756, while the sum is 22.

The square root of 336721 is about 580.2766581554. The cubic root of 336721 is about 69.5702238641.

It can be divided in two parts, 3367 and 21, that multiplied together give a palindrome (70707).

The spelling of 336721 in words is "three hundred thirty-six thousand, seven hundred twenty-one".