686043066 has 8 divisors (see below), whose sum is σ = 1372086144. Its totient is φ = 228681020.

The previous prime is 686043049. The next prime is 686043121. The reversal of 686043066 is 660340686.

It is a sphenic number, since it is the product of 3 distinct primes.

686043066 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57170250 + ... + 57170261.

It is an arithmetic number, because the mean of its divisors is an integer number (171510768).

Almost surely, 2^686043066 is an apocalyptic number.

686043066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686043066 is a wasteful number, since it uses less digits than its factorization.

686043066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114340516.

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 686043066 is about 26192.4238282752. The cubic root of 686043066 is about 881.9631902409.

The spelling of 686043066 in words is "six hundred eighty-six million, forty-three thousand, sixty-six".