690805413 has 12 divisors (see below), whose sum is σ = 998075520. Its totient is φ = 460423656.

The previous prime is 690805403. The next prime is 690805417. The reversal of 690805413 is 314508096.

690805413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 690805413 - 2¹⁶ = 690739877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690805417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46828 + ... + 59786.

It is an arithmetic number, because the mean of its divisors is an integer number (83172960).

Almost surely, 2^690805413 is an apocalyptic number.

It is an amenable number.

690805413 is a deficient number, since it is larger than the sum of its proper divisors (307270107).

690805413 is a wasteful number, since it uses less digits than its factorization.

690805413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18888 (or 18885 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 690805413 is about 26283.1773764132. The cubic root of 690805413 is about 883.9992786963. Note that the first 3 decimals are identical.

The spelling of 690805413 in words is "six hundred ninety million, eight hundred five thousand, four hundred thirteen".