349658 has 4 divisors (see below), whose sum is σ = 524490. Its totient is φ = 174828.

The previous prime is 349637. The next prime is 349663. The reversal of 349658 is 856943.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 267289 + 82369 = 517^2 + 287^2 .

It is an alternating number because its digits alternate between odd and even.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 349658.

It is an unprimeable 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 as a sum of consecutive naturals, namely, 87413 + ... + 87416.

2³⁴⁹⁶⁵⁸ is an apocalyptic number.

349658 is a deficient number, since it is larger than the sum of its proper divisors (174832).

349658 is a wasteful number, since it uses less digits than its factorization.

349658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174831.

The product of its digits is 25920, while the sum is 35.

The square root of 349658 is about 591.3188649113. The cubic root of 349658 is about 70.4500257814.

The spelling of 349658 in words is "three hundred forty-nine thousand, six hundred fifty-eight".