206827961 has 4 divisors (see below), whose sum is σ = 206929152. Its totient is φ = 206726772.

The previous prime is 206827931. The next prime is 206827963. The reversal of 206827961 is 169728602.

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 206827961 - 2¹⁸ = 206565817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206827963) 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, 47465 + ... + 51638.

It is an arithmetic number, because the mean of its divisors is an integer number (51732288).

Almost surely, 2^206827961 is an apocalyptic number.

It is an amenable number.

206827961 is a deficient number, since it is larger than the sum of its proper divisors (101191).

206827961 is an equidigital number, since it uses as much as digits as its factorization.

206827961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101190.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 206827961 is about 14381.5145586270. The cubic root of 206827961 is about 591.3842447489.

The spelling of 206827961 in words is "two hundred six million, eight hundred twenty-seven thousand, nine hundred sixty-one".