686133801 has 16 divisors (see below), whose sum is σ = 1031668800. Its totient is φ = 450594144.

The previous prime is 686133793. The next prime is 686133827. The reversal of 686133801 is 108331686.

686133801 is a `hidden beast` number, since 6 + 8 + 613 + 38 + 0 + 1 = 666.

It is not a de Polignac number, because 686133801 - 2³ = 686133793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (686131801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187836 + ... + 191453.

It is an arithmetic number, because the mean of its divisors is an integer number (64479300).

Almost surely, 2^686133801 is an apocalyptic number.

It is an amenable number.

686133801 is a deficient number, since it is larger than the sum of its proper divisors (345534999).

686133801 is a wasteful number, since it uses less digits than its factorization.

686133801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379365 (or 379359 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 686133801 is about 26194.1558558393. The cubic root of 686133801 is about 882.0020708915.

The spelling of 686133801 in words is "six hundred eighty-six million, one hundred thirty-three thousand, eight hundred one".