206690867407 has 2 divisors, whose sum is σ = 206690867408. Its totient is φ = 206690867406.

The previous prime is 206690867401. The next prime is 206690867413. The reversal of 206690867407 is 704768096602.

It is a balanced prime because it is at equal distance from previous prime (206690867401) and next prime (206690867413).

It is a cyclic number.

It is not a de Polignac number, because 206690867407 - 2³ = 206690867399 is a prime.

It is a super-2 number, since 2×206690867407² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206690867401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103345433703 + 103345433704.

It is an arithmetic number, because the mean of its divisors is an integer number (103345433704).

Almost surely, 2^206690867407 is an apocalyptic number.

206690867407 is a deficient number, since it is larger than the sum of its proper divisors (1).

206690867407 is an equidigital number, since it uses as much as digits as its factorization.

206690867407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 206690867407 in words is "two hundred six billion, six hundred ninety million, eight hundred sixty-seven thousand, four hundred seven".