206626051 has 4 divisors (see below), whose sum is σ = 211431352. Its totient is φ = 201820752.

The previous prime is 206626033. The next prime is 206626061. The reversal of 206626051 is 150626602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 206626051 - 2¹⁷ = 206494979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206626061) 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, 2402586 + ... + 2402671.

It is an arithmetic number, because the mean of its divisors is an integer number (52857838).

Almost surely, 2^206626051 is an apocalyptic number.

206626051 is a deficient number, since it is larger than the sum of its proper divisors (4805301).

206626051 is an equidigital number, since it uses as much as digits as its factorization.

206626051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4805300.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 206626051 is about 14374.4930693225. The cubic root of 206626051 is about 591.1917413287.

The spelling of 206626051 in words is "two hundred six million, six hundred twenty-six thousand, fifty-one".