206045663 has 2 divisors, whose sum is σ = 206045664. Its totient is φ = 206045662.

The previous prime is 206045599. The next prime is 206045681. The reversal of 206045663 is 366540602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206045663 - 2⁶ = 206045599 is a prime.

It is a super-2 number, since 2×206045663² = 84909630482219138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206045683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103022831 + 103022832.

It is an arithmetic number, because the mean of its divisors is an integer number (103022832).

Almost surely, 2^206045663 is an apocalyptic number.

206045663 is a deficient number, since it is larger than the sum of its proper divisors (1).

206045663 is an equidigital number, since it uses as much as digits as its factorization.

206045663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 206045663 is about 14354.2907522455. The cubic root of 206045663 is about 590.6376931587.

The spelling of 206045663 in words is "two hundred six million, forty-five thousand, six hundred sixty-three".