349581 has 8 divisors (see below), whose sum is σ = 490720. Its totient is φ = 220752.

The previous prime is 349579. The next prime is 349589. The reversal of 349581 is 185943.

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

It is not a de Polignac number, because 349581 - 2¹ = 349579 is a prime.

It is a super-2 number, since 2×349581² = 244413751122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349589) 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, 3010 + ... + 3123.

It is an arithmetic number, because the mean of its divisors is an integer number (61340).

2³⁴⁹⁵⁸¹ is an apocalyptic number.

It is an amenable number.

349581 is a deficient number, since it is larger than the sum of its proper divisors (141139).

349581 is a wasteful number, since it uses less digits than its factorization.

349581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6155.

The product of its digits is 4320, while the sum is 30.

The square root of 349581 is about 591.2537526308. The cubic root of 349581 is about 70.4448540133. Note that the first 3 decimals are identical.

The spelling of 349581 in words is "three hundred forty-nine thousand, five hundred eighty-one".