206715147 has 16 divisors (see below), whose sum is σ = 282720768. Its totient is φ = 134275680.

The previous prime is 206715137. The next prime is 206715181. The reversal of 206715147 is 741517602.

It is not a de Polignac number, because 206715147 - 2⁶ = 206715083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206715137) 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, 57997 + ... + 61457.

It is an arithmetic number, because the mean of its divisors is an integer number (17670048).

Almost surely, 2^206715147 is an apocalyptic number.

206715147 is a deficient number, since it is larger than the sum of its proper divisors (76005621).

206715147 is a wasteful number, since it uses less digits than its factorization.

206715147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3970.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 206715147 is about 14377.5918359091. The cubic root of 206715147 is about 591.2767019781.

The spelling of 206715147 in words is "two hundred six million, seven hundred fifteen thousand, one hundred forty-seven".