686733469 has 2 divisors, whose sum is σ = 686733470. Its totient is φ = 686733468.

The previous prime is 686733413. The next prime is 686733493. The reversal of 686733469 is 964337686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 568250244 + 118483225 = 23838^2 + 10885^2 .

It is a cyclic number.

It is not a de Polignac number, because 686733469 - 2²¹ = 684636317 is a prime.

It is a super-2 number, since 2×686733469² = 943205714889547922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (686733569) 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 as a sum of consecutive naturals, namely, 343366734 + 343366735.

It is an arithmetic number, because the mean of its divisors is an integer number (343366735).

Almost surely, 2^686733469 is an apocalyptic number.

It is an amenable number.

686733469 is a deficient number, since it is larger than the sum of its proper divisors (1).

686733469 is an equidigital number, since it uses as much as digits as its factorization.

686733469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 52.

The square root of 686733469 is about 26205.5999549715. The cubic root of 686733469 is about 882.2589471288.

The spelling of 686733469 in words is "six hundred eighty-six million, seven hundred thirty-three thousand, four hundred sixty-nine".