686735422 has 4 divisors (see below), whose sum is σ = 1030103136. Its totient is φ = 343367710.

The previous prime is 686735393. The next prime is 686735431. The reversal of 686735422 is 224537686.

686735422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171683854 + ... + 171683857.

It is an arithmetic number, because the mean of its divisors is an integer number (257525784).

Almost surely, 2^686735422 is an apocalyptic number.

686735422 is a deficient number, since it is larger than the sum of its proper divisors (343367714).

686735422 is a wasteful number, since it uses less digits than its factorization.

686735422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343367713.

The product of its digits is 483840, while the sum is 43.

The square root of 686735422 is about 26205.6372179728. The cubic root of 686735422 is about 882.2597834796.

The spelling of 686735422 in words is "six hundred eighty-six million, seven hundred thirty-five thousand, four hundred twenty-two".