206401853 has 8 divisors (see below), whose sum is σ = 236019840. Its totient is φ = 176816880.

The previous prime is 206401837. The next prime is 206401859. The reversal of 206401853 is 358104602.

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 206401853 - 2⁴ = 206401837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206401859) 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, 7043 + ... + 21503.

It is an arithmetic number, because the mean of its divisors is an integer number (29502480).

Almost surely, 2^206401853 is an apocalyptic number.

It is an amenable number.

206401853 is a deficient number, since it is larger than the sum of its proper divisors (29617987).

206401853 is a wasteful number, since it uses less digits than its factorization.

206401853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16507.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 206401853 is about 14366.6924864424. The cubic root of 206401853 is about 590.9778412696.

The spelling of 206401853 in words is "two hundred six million, four hundred one thousand, eight hundred fifty-three".