348721 has 8 divisors (see below), whose sum is σ = 375624. Its totient is φ = 322560.

The previous prime is 348709. The next prime is 348731. The reversal of 348721 is 127843.

It can be written as a sum of positive squares in 4 ways, for example, as 132496 + 216225 = 364^2 + 465^2 .

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 348721 - 2⁹ = 348209 is a prime.

It is a Duffinian number.

348721 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (348731) 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, 1101 + ... + 1381.

It is an arithmetic number, because the mean of its divisors is an integer number (46953).

2³⁴⁸⁷²¹ is an apocalyptic number.

It is an amenable number.

348721 is a deficient number, since it is larger than the sum of its proper divisors (26903).

348721 is a wasteful number, since it uses less digits than its factorization.

348721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371.

The product of its digits is 1344, while the sum is 25.

The square root of 348721 is about 590.5260366825. The cubic root of 348721 is about 70.3870397329.

The spelling of 348721 in words is "three hundred forty-eight thousand, seven hundred twenty-one".