690352817009 has 4 divisors (see below), whose sum is σ = 695391888804. Its totient is φ = 685313745216.

The previous prime is 690352816963. The next prime is 690352817027. The reversal of 690352817009 is 900718253096.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 277488739984 + 412864077025 = 526772^2 + 642545^2 .

It is a cyclic number.

It is not a de Polignac number, because 690352817009 - 2²⁰ = 690351768433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690352817069) 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, 2519535692 + ... + 2519535965.

It is an arithmetic number, because the mean of its divisors is an integer number (173847972201).

Almost surely, 2^690352817009 is an apocalyptic number.

It is an amenable number.

690352817009 is a deficient number, since it is larger than the sum of its proper divisors (5039071795).

690352817009 is a wasteful number, since it uses less digits than its factorization.

690352817009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5039071794.

The product of its (nonzero) digits is 816480, while the sum is 50.

The spelling of 690352817009 in words is "six hundred ninety billion, three hundred fifty-two million, eight hundred seventeen thousand, nine".