349647 has 4 divisors (see below), whose sum is σ = 466200. Its totient is φ = 233096.

The previous prime is 349637. The next prime is 349663. The reversal of 349647 is 746943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746943 = 3 ⋅248981.

It is a cyclic number.

It is not a de Polignac number, because 349647 - 2⁷ = 349519 is a prime.

It is a D-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 (349637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58272 + ... + 58277.

It is an arithmetic number, because the mean of its divisors is an integer number (116550).

2³⁴⁹⁶⁴⁷ is an apocalyptic number.

349647 is a deficient number, since it is larger than the sum of its proper divisors (116553).

349647 is a wasteful number, since it uses less digits than its factorization.

349647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116552.

The product of its digits is 18144, while the sum is 33.

The square root of 349647 is about 591.3095635959. The cubic root of 349647 is about 70.4492870039.

The spelling of 349647 in words is "three hundred forty-nine thousand, six hundred forty-seven".