206785151 has 8 divisors (see below), whose sum is σ = 222731520. Its totient is φ = 191345112.

The previous prime is 206785133. The next prime is 206785177. The reversal of 206785151 is 151587602.

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 206785151 - 2⁶ = 206785087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206785351) 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, 125735 + ... + 127368.

It is an arithmetic number, because the mean of its divisors is an integer number (27841440).

Almost surely, 2^206785151 is an apocalyptic number.

206785151 is a deficient number, since it is larger than the sum of its proper divisors (15946369).

206785151 is a wasteful number, since it uses less digits than its factorization.

206785151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253165.

The product of its (nonzero) digits is 16800, while the sum is 35.

The square root of 206785151 is about 14380.0261126328. The cubic root of 206785151 is about 591.3434396496.

The spelling of 206785151 in words is "two hundred six million, seven hundred eighty-five thousand, one hundred fifty-one".