690960211 has 4 divisors (see below), whose sum is σ = 691232992. Its totient is φ = 690687432.

The previous prime is 690960191. The next prime is 690960217. The reversal of 690960211 is 112069096.

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 690960211 - 2⁹ = 690959699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690960217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132555 + ... + 137668.

It is an arithmetic number, because the mean of its divisors is an integer number (172808248).

Almost surely, 2^690960211 is an apocalyptic number.

690960211 is a deficient number, since it is larger than the sum of its proper divisors (272781).

690960211 is a wasteful number, since it uses less digits than its factorization.

690960211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272780.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 690960211 is about 26286.1220228470. The cubic root of 690960211 is about 884.0653036085.

The spelling of 690960211 in words is "six hundred ninety million, nine hundred sixty thousand, two hundred eleven".