340547 has 4 divisors (see below), whose sum is σ = 352320. Its totient is φ = 328776.

The previous prime is 340541. The next prime is 340559. The reversal of 340547 is 745043.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340541) 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, 5843 + ... + 5900.

It is an arithmetic number, because the mean of its divisors is an integer number (88080).

2³⁴⁰⁵⁴⁷ is an apocalyptic number.

340547 is a deficient number, since it is larger than the sum of its proper divisors (11773).

340547 is a wasteful number, since it uses less digits than its factorization.

340547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11772.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 340547 is about 583.5640496124. The cubic root of 340547 is about 69.8327298658.

Subtracting 340547 from its reverse (745043), we obtain a square (404496 = 636²).

The spelling of 340547 in words is "three hundred forty thousand, five hundred forty-seven".