690071227 has 4 divisors (see below), whose sum is σ = 690499080. Its totient is φ = 689643376.

The previous prime is 690071219. The next prime is 690071237. The reversal of 690071227 is 722170096.

690071227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 690071227 - 2³ = 690071219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 690071192 and 690071201.

It is not an unprimeable number, because it can be changed into a prime (690071237) 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, 211498 + ... + 214735.

It is an arithmetic number, because the mean of its divisors is an integer number (172624770).

Almost surely, 2^690071227 is an apocalyptic number.

690071227 is a deficient number, since it is larger than the sum of its proper divisors (427853).

690071227 is a wasteful number, since it uses less digits than its factorization.

690071227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427852.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 690071227 is about 26269.2068209149. The cubic root of 690071227 is about 883.6859970574.

The spelling of 690071227 in words is "six hundred ninety million, seventy-one thousand, two hundred twenty-seven".