690664067354 has 16 divisors (see below), whose sum is σ = 1037424635520. Its totient is φ = 344855994480.

The previous prime is 690664067263. The next prime is 690664067369. The reversal of 690664067354 is 453760466096.

It is a super-3 number, since 3×690664067354³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 690664067354.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11130587 + ... + 11192465.

It is an arithmetic number, because the mean of its divisors is an integer number (64839039720).

Almost surely, 2^690664067354 is an apocalyptic number.

690664067354 is a deficient number, since it is larger than the sum of its proper divisors (346760568166).

690664067354 is a wasteful number, since it uses less digits than its factorization.

690664067354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69485.

The product of its (nonzero) digits is 19595520, while the sum is 56.

The spelling of 690664067354 in words is "six hundred ninety billion, six hundred sixty-four million, sixty-seven thousand, three hundred fifty-four".