349660 has 12 divisors (see below), whose sum is σ = 734328. Its totient is φ = 139856.

The previous prime is 349637. The next prime is 349663. The reversal of 349660 is 66943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349663) by changing a digit.

349660 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8722 + ... + 8761.

It is an arithmetic number, because the mean of its divisors is an integer number (61194).

2³⁴⁹⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

349660 is an abundant number, since it is smaller than the sum of its proper divisors (384668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

349660 is a wasteful number, since it uses less digits than its factorization.

349660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17492 (or 17490 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 349660 is about 591.3205560438. The cubic root of 349660 is about 70.4501601029.

The spelling of 349660 in words is "three hundred forty-nine thousand, six hundred sixty".