690931807769 has 8 divisors (see below), whose sum is σ = 789769044480. Its totient is φ = 592127744256.

The previous prime is 690931807703. The next prime is 690931807777. The reversal of 690931807769 is 967708139096.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 690931807769 - 2³² = 686636840473 is a prime.

It is a super-2 number, since 2×690931807769² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690931807369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8248649 + ... + 8331990.

It is an arithmetic number, because the mean of its divisors is an integer number (98721130560).

Almost surely, 2^690931807769 is an apocalyptic number.

It is an amenable number.

690931807769 is a deficient number, since it is larger than the sum of its proper divisors (98837236711).

690931807769 is a wasteful number, since it uses less digits than its factorization.

690931807769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16586599.

The product of its (nonzero) digits is 30862944, while the sum is 65.

The spelling of 690931807769 in words is "six hundred ninety billion, nine hundred thirty-one million, eight hundred seven thousand, seven hundred sixty-nine".