206640014 has 8 divisors (see below), whose sum is σ = 354240048. Its totient is φ = 88560000.

The previous prime is 206640013. The next prime is 206640019. The reversal of 206640014 is 410046602.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206640013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7379987 + ... + 7380014.

It is an arithmetic number, because the mean of its divisors is an integer number (44280006).

Almost surely, 2^206640014 is an apocalyptic number.

206640014 is a deficient number, since it is larger than the sum of its proper divisors (147600034).

206640014 is a wasteful number, since it uses less digits than its factorization.

206640014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14760010.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 206640014 is about 14374.9787478104. The cubic root of 206640014 is about 591.2050578560.

Adding to 206640014 its reverse (410046602), we get a palindrome (616686616).

The spelling of 206640014 in words is "two hundred six million, six hundred forty thousand, fourteen".