680687146 has 8 divisors (see below), whose sum is σ = 1021157280. Its totient is φ = 340301388.

The previous prime is 680687131. The next prime is 680687173. The reversal of 680687146 is 641786086.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 680687096 and 680687105.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6075 + ... + 37393.

It is an arithmetic number, because the mean of its divisors is an integer number (127644660).

Almost surely, 2^680687146 is an apocalyptic number.

680687146 is a deficient number, since it is larger than the sum of its proper divisors (340470134).

680687146 is a wasteful number, since it uses less digits than its factorization.

680687146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42188.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 680687146 is about 26089.9817171266. The cubic root of 680687146 is about 879.6620370612.

The spelling of 680687146 in words is "six hundred eighty million, six hundred eighty-seven thousand, one hundred forty-six".