206413397 has 8 divisors (see below), whose sum is σ = 219430560. Its totient is φ = 193611600.

The previous prime is 206413391. The next prime is 206413421. The reversal of 206413397 is 793314602.

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

It is a cyclic number.

It is not a de Polignac number, because 206413397 - 2¹⁶ = 206347861 is a prime.

It is a super-2 number, since 2×206413397² = 85212980922159218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206413391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51863 + ... + 55700.

It is an arithmetic number, because the mean of its divisors is an integer number (27428820).

Almost surely, 2^206413397 is an apocalyptic number.

It is an amenable number.

206413397 is a deficient number, since it is larger than the sum of its proper divisors (13017163).

206413397 is a wasteful number, since it uses less digits than its factorization.

206413397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107683.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 206413397 is about 14367.0942434439. The cubic root of 206413397 is about 590.9888588080.

Adding to 206413397 its reverse (793314602), we get a palindrome (999727999).

The spelling of 206413397 in words is "two hundred six million, four hundred thirteen thousand, three hundred ninety-seven".