206401069 has 16 divisors (see below), whose sum is σ = 244509696. Its totient is φ = 170496000.

The previous prime is 206401067. The next prime is 206401127. The reversal of 206401069 is 960104602.

It is a cyclic number.

It is not a de Polignac number, because 206401069 - 2¹ = 206401067 is a prime.

It is a super-2 number, since 2×206401069² = 85202802568685522, 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 (206401061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53919 + ... + 57619.

It is an arithmetic number, because the mean of its divisors is an integer number (15281856).

Almost surely, 2^206401069 is an apocalyptic number.

It is an amenable number.

206401069 is a deficient number, since it is larger than the sum of its proper divisors (38108627).

206401069 is a wasteful number, since it uses less digits than its factorization.

206401069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3996.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 206401069 is about 14366.6652010827. The cubic root of 206401069 is about 590.9770930088.

The spelling of 206401069 in words is "two hundred six million, four hundred one thousand, sixty-nine".