206930253 has 8 divisors (see below), whose sum is σ = 279686848. Its totient is φ = 136063584.

The previous prime is 206930231. The next prime is 206930257. The reversal of 206930253 is 352039602.

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

It is not a de Polignac number, because 206930253 - 2⁵ = 206930221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206930253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206930257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472225 + ... + 472662.

It is an arithmetic number, because the mean of its divisors is an integer number (34960856).

Almost surely, 2^206930253 is an apocalyptic number.

It is an amenable number.

206930253 is a deficient number, since it is larger than the sum of its proper divisors (72756595).

206930253 is an equidigital number, since it uses as much as digits as its factorization.

206930253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944963.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 206930253 is about 14385.0704899211. The cubic root of 206930253 is about 591.4817233598.

Adding to 206930253 its reverse (352039602), we get a palindrome (558969855).

The spelling of 206930253 in words is "two hundred six million, nine hundred thirty thousand, two hundred fifty-three".