206434 has 4 divisors (see below), whose sum is σ = 309654. Its totient is φ = 103216.

The previous prime is 206419. The next prime is 206447. The reversal of 206434 is 434602.

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., 205209 + 1225 = 453^2 + 35^2 .

It is a super-2 number, since 2×206434² = 85229992712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51607 + ... + 51610.

2²⁰⁶⁴³⁴ is an apocalyptic number.

206434 is a deficient number, since it is larger than the sum of its proper divisors (103220).

206434 is a wasteful number, since it uses less digits than its factorization.

206434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103219.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 206434 is about 454.3500852867. The cubic root of 206434 is about 59.1008521192.

The spelling of 206434 in words is "two hundred six thousand, four hundred thirty-four".