206210049 has 4 divisors (see below), whose sum is σ = 274946736. Its totient is φ = 137473364.

The previous prime is 206210041. The next prime is 206210087. The reversal of 206210049 is 940012602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 206210049 - 2³ = 206210041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206210041) 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, 34368339 + ... + 34368344.

It is an arithmetic number, because the mean of its divisors is an integer number (68736684).

Almost surely, 2^206210049 is an apocalyptic number.

It is an amenable number.

206210049 is a deficient number, since it is larger than the sum of its proper divisors (68736687).

206210049 is an equidigital number, since it uses as much as digits as its factorization.

206210049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68736686.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 206210049 is about 14360.0156336962. The cubic root of 206210049 is about 590.7947243030.

The spelling of 206210049 in words is "two hundred six million, two hundred ten thousand, forty-nine".