206698129 has 9 divisors (see below), whose sum is σ = 227371081. Its totient is φ = 187763620.

The previous prime is 206698123. The next prime is 206698153. The reversal of 206698129 is 921896602.

The square root of 206698129 is 14377.

It is a perfect power (a square), and thus also a powerful number.

206698129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 206698129 - 2¹⁷ = 206567057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206698123) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 157494 + ... + 158800.

Almost surely, 2^206698129 is an apocalyptic number.

206698129 is the 14377-th square number.

206698129 is the 7189-th centered octagonal number.

It is an amenable number.

206698129 is a deficient number, since it is larger than the sum of its proper divisors (20672952).

206698129 is an frugal number, since it uses more digits than its factorization.

206698129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636 (or 1318 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The cubic root of 206698129 is about 591.2604757473.

The spelling of 206698129 in words is "two hundred six million, six hundred ninety-eight thousand, one hundred twenty-nine".