690073818605 has 32 divisors (see below), whose sum is σ = 884342624256. Its totient is φ = 515121030144.

The previous prime is 690073818601. The next prime is 690073818649. The reversal of 690073818605 is 506818370096.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 690073818605 - 2² = 690073818601 is a prime.

It is a super-3 number, since 3×690073818605³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690073818601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15382067 + ... + 15426863.

It is an arithmetic number, because the mean of its divisors is an integer number (27635707008).

Almost surely, 2^690073818605 is an apocalyptic number.

It is an amenable number.

690073818605 is a deficient number, since it is larger than the sum of its proper divisors (194268805651).

690073818605 is a wasteful number, since it uses less digits than its factorization.

690073818605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46373.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 690073818605 in words is "six hundred ninety billion, seventy-three million, eight hundred eighteen thousand, six hundred five".