686968433 has 2 divisors, whose sum is σ = 686968434. Its totient is φ = 686968432.

The previous prime is 686968423. The next prime is 686968537. The reversal of 686968433 is 334869686.

686968433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 553519729 + 133448704 = 23527^2 + 11552^2 .

It is a cyclic number.

It is not a de Polignac number, because 686968433 - 2⁶ = 686968369 is a prime.

It is not a weakly prime, because it can be changed into another prime (686968423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343484216 + 343484217.

It is an arithmetic number, because the mean of its divisors is an integer number (343484217).

Almost surely, 2^686968433 is an apocalyptic number.

It is an amenable number.

686968433 is a deficient number, since it is larger than the sum of its proper divisors (1).

686968433 is an equidigital number, since it uses as much as digits as its factorization.

686968433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4478976, while the sum is 53.

The square root of 686968433 is about 26210.0826591600. The cubic root of 686968433 is about 882.3595564932.

The spelling of 686968433 in words is "six hundred eighty-six million, nine hundred sixty-eight thousand, four hundred thirty-three".