349665 has 8 divisors (see below), whose sum is σ = 559488. Its totient is φ = 186480.

The previous prime is 349663. The next prime is 349667. The reversal of 349665 is 566943.

It is a happy number.

349665 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (349663) and next prime (349667).

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

It is not a de Polignac number, because 349665 - 2¹ = 349663 is a prime.

It is a super-2 number, since 2×349665² = 244531224450, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3⁹ + 4⁴ + 6⁶ + 9 + 6⁷ + 5⁵ .

349665 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349663) 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, 11641 + ... + 11670.

It is an arithmetic number, because the mean of its divisors is an integer number (69936).

2³⁴⁹⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

349665 is a deficient number, since it is larger than the sum of its proper divisors (209823).

349665 is a wasteful number, since it uses less digits than its factorization.

349665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23319.

The product of its digits is 19440, while the sum is 33.

The square root of 349665 is about 591.3247838540. The cubic root of 349665 is about 70.4504959045.

The spelling of 349665 in words is "three hundred forty-nine thousand, six hundred sixty-five".