206405414 has 8 divisors (see below), whose sum is σ = 310893528. Its totient is φ = 102774240.

The previous prime is 206405401. The next prime is 206405431. The reversal of 206405414 is 414504602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×206405414² = 85206389857022792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213632 + ... + 214595.

It is an arithmetic number, because the mean of its divisors is an integer number (38861691).

Almost surely, 2^206405414 is an apocalyptic number.

206405414 is a deficient number, since it is larger than the sum of its proper divisors (104488114).

206405414 is a wasteful number, since it uses less digits than its factorization.

206405414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428470.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 206405414 is about 14366.8164183997. The cubic root of 206405414 is about 590.9812399148.

The spelling of 206405414 in words is "two hundred six million, four hundred five thousand, four hundred fourteen".