686468783 has 36 divisors (see below), whose sum is σ = 941158008. Its totient is φ = 492186240.

The previous prime is 686468779. The next prime is 686468819. The reversal of 686468783 is 387864686.

It is not a de Polignac number, because 686468783 - 2² = 686468779 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686468723) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2193035 + ... + 2193347.

It is an arithmetic number, because the mean of its divisors is an integer number (26143278).

Almost surely, 2^686468783 is an apocalyptic number.

686468783 is a deficient number, since it is larger than the sum of its proper divisors (254689225).

686468783 is a wasteful number, since it uses less digits than its factorization.

686468783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 344 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 56.

The square root of 686468783 is about 26200.5492881352. The cubic root of 686468783 is about 882.1455835943.

The spelling of 686468783 in words is "six hundred eighty-six million, four hundred sixty-eight thousand, seven hundred eighty-three".