206040697 has 16 divisors (see below), whose sum is σ = 221451840. Its totient is φ = 191020032.

The previous prime is 206040691. The next prime is 206040713. The reversal of 206040697 is 796040602.

It is a cyclic number.

It is not a de Polignac number, because 206040697 - 2²³ = 197652089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206040691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 543454 + ... + 543832.

It is an arithmetic number, because the mean of its divisors is an integer number (13840740).

Almost surely, 2^206040697 is an apocalyptic number.

It is an amenable number.

206040697 is a deficient number, since it is larger than the sum of its proper divisors (15411143).

206040697 is a wasteful number, since it uses less digits than its factorization.

206040697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 206040697 is about 14354.1177715665. The cubic root of 206040697 is about 590.6329480449.

The spelling of 206040697 in words is "two hundred six million, forty thousand, six hundred ninety-seven".